Best Way To Remove Urine Odour From Artificial Grass

Best Way To Remove Urine Odour From Artificial Grass

The best way to remove urine odour from artificial grass

The best way to remove urine odour from artificial grass

As we move slowly towards the spring, and the weather starts to warm up, the emails from desperate, frustrated dog owners start flooding in.

”My artificial grass stinks, what can I do? Please help! ”

”I’ve bought every product on Amazon and nothing removes the fishy smell…’

So why does your artificial grass smell, and what’s the best way to remove the urine odour from it?

Synthetic turf is a godsend for families and dog owners alike, providing a usable, mud free outside space for children and pets even during the wettest seasons.

During the winter months, 98% of dog owners don’t clean their artificial grass, having been told by their installers that the rain will do it for them.

It only takes a few dry days, even in the coldest weather for your dog’s wee to start building up on your lawn.

Trickling through the blades of grass, seeping under the turf, and coagulating between the bottom of the grass carpet and the weed membrane.

Not a nice thought, but that’s exactly what’s happening!

Best way to remove urine odour from artificial grass

There are 3 main parts to urine:

  • The tacky stuff is urea
  • The pigment is urochrome
  • The uric acid crystals that are sharp and pointy, looking a bit like salt


It’s the uric acid produces the pong

These uric crystals are insoluble and bond tightly to anything they land on, like your carpets, furniture or artificial grass.

Uric acid crystals are buggers – causing havoc, blocking up urinals, making men’s loos smell bad, and getting stuck in our joints causing gout.

When you have a build-up of uric acid crystals attached to your artificial grass, the rain during the winter just isn’t enough to wash them away, and they’re never going to dissolve, it’s not biologically possible.

These uric acid crystals just ‘sit & stay’ until they become reactivated by warm humid weather by attracting moisture from the atmosphere.  Bacteria thrives in this environment and produces an off-gas, together with the ammonia, which is the smell.

As the weather warms up the bacteria become more active and the smell gets stronger and you abandon any idea of sitting on your new lawn and retreat back into the house.

In order to remove the urine odour from your artificial grass, the uric acid crystals have to be detached completely from the area they’re sticking to and permanently removed.

Bio – Enzyme Cleaners are the best way to remove urine odour from artificial grass

The only really effective cleaning solution that will do this is an enzyme cleaner that is specifically manufactured to attack and breakdown the 3 urine components, but mainly those pesky uric acid crystals.

Best way remove urine odour from artificial grass

How do enzyme cleaners remove urine odour from artificial grass?

Most household cleaners don’t contain enzymes, as they’re not necessary for general sanitation.

Bio-enzymatic cleaners are cleaning products that use non-pathogenic, “good” bacteria to digest uric acid crystals and waste matter.

The bacteria do this by producing enzymes specifically designed to break down certain molecules and uric acid into smaller pieces. These smaller pieces become “food” for the bacteria. The bacteria consume the uric acid crystals and break them down into two basic compounds: carbon dioxide and water.

The bacteria grow in number and continue to digest the crystals and other waste until they’ve eaten it all, then the bacteria population decreases or dies off, and can be washed away during the next cleaning or heavy rain, or continue to work against the next dog pee.


We have 2 great bio-enzyme cleaners. WEE FREE is a cost effective cleaner and has been specifically designed to soak the Sub-Base or sand underneath the grass and is great if you have really stinky latex backed grass.

PONGO is slightly more expensive and perfect for surface cleaning your grass as it contains a brilliant grass brightener.

Our professional cleaning teams use them together. The WEE FREE first to deodorise the sub-base, and then the PONGO to really freshen up the blades and make the lawn look lush.

Bottles Required


How to enzyme clean your artificial grass

You can’t half do it and expect it to work, sorry.

Imagine uric acid crystals were grains of salt, and take 10 kgs of salt and throw it thinly over your astro turf lawn and brush it in well, so you can’t see it.

Now Imagine each individual grain of salt is adding to that dreadful dog pee smell that’s making you hate your garden.

To remove that smell, you must coat each of these invisible grains of salt with the enzyme cleaner, so the good bacteria can get to work digesting it.

No uric acid crystal can be left intact!

You can’t buy 750ml of a product from Amazon, waft it around like eau de toilette, and hope for the best.

It won’t work. You must soak each and every uric acid crystal, and most of them are UNDER the grass.

That’s why we invented WEE FREE sub-base soaker!

The best way to remove urine odour from artificial grass

Spring clean your grass – Tackle it as ‘a project’!

You can buy enzyme cleaners easily online, but they’re not cheap, and you’ll need a lot of the stuff. You need plenty to soak every uric acid crystal and then some.

Be prepared to spend money: 

As most of the uric acid crystals will be at the base of the grass blades, and on the turf backing you need to access it. First you must brush your grass so the blades are standing upright, and all dog hair and debris has been removed. This will allow the cleaner to flow down through the grass unimpeded.

Groom your grass:

As most of the uric acid crystals will be at the base of the grass blades, and on the turf backing you need to access it. First you must brush your grass so the blades are standing upright, and all dog hair and debris has been removed. This will allow the cleaner to flow down through the grass unimpeded.

Mix it up:

Dilute and mix your enzyme cleaner as per the instructions, and we’d recommend that you buy a pressure sprayer to make your life easier, or a foam car washing gun to attach to your hose.

Spray and spray again:

On a 30m2 garden, after power brushing the grass blades upright, the specialist ‘Top Dog Clean Team’ will use 5 litres (£38 per bottle) of the WEE FREE Sub-base Soaker to flush underneath the grass, and then half a bottle of PONGO Artificial Grass Enzyme Cleaner to brighten the blades.

We want to saturate every one of those uric acid crystals – twice- and use enough cleaner for it to run down the blades to the grass backing, through the drainage holes, over the weed membrane and down in to the aggregate base…. It’s hard work.

Prevention is better than cure:

After your grass has had a spring clean, we suggest a weekly wash to keep it clean.

Remember, every dog wee, however small will be adding to the uric acid build up.

Those crystals, like thousands of grains of salt, will be sitting, unseen in your lawn, waiting for a bit of heat and humidity to start stinking, and make your garden ghastly,  just as you’re pouring an iced beer and lighting the BBQ

If you want to know the best way to remove urine odour from artificial grass then get in touch

Top Dog Turf are specialists in odour removal and cleaning of artificial grass.

We can provide you with everything you need to DIY, or we will come and do it for you.

Best way remove urine odour from artificial grass


Top Dog Turf’s ‘PONGO’  and WEE FREE Artificial Grass Enzyme Cleaners are used by our professional odour removal teams.

Recommended by the Synthetic Turf Council for cleaning and deodorising all artificial grass. 

£30.00 for 1 Litre bottle that cleans up to 160 m2

Bottles Required

If you’d like to know more about how to remove the nasty niffs from your lawn,  just call us on 0207 101 4145 or click the ‘Find Out More’ button, and we’ll be in touch.



  • Shirley Schott
    Posted at 00:19h, 01 June Reply

    Hi do you know of a company that would come and groom my grass then soak it to get rid of smell of dog pee. I’ve tried so many products but can’t brush all the debris out of the grass to get the product into the blades of grass to soak the smell. I live in Cardiff

    • topdogturf
      Posted at 07:31h, 01 June Reply

      Hi Shirley, at this moment we’re the only company in the UK that provide deodorising services for artificial grass, and we’re miles away from you, but we’ll do all we can to help.
      Could you email some photos of your grass to us please.
      We can see if the grass has ‘knitted’ together and we’ll put together a plan to help you.
      Emma Top Dog Turf

  • Becky Gonzalez
    Posted at 02:13h, 05 July Reply

    Hi I’m in Birmingham. Can you recommend a grass grooming company near me please?

    • topdogturf
      Posted at 10:28h, 07 July Reply

      Hi Becky,
      We’ll happily come to Birmingham and deodorise your grass for you. If you could send the cleaning team an email with the size of you lawn we’ll be able to give you a quotation.

      Thanks! Emma

  • neels smit
    Posted at 11:54h, 06 July Reply

    Do you export to South Africa and what will it cost me to get 3 xliters

    • topdogturf
      Posted at 10:25h, 07 July Reply

      Hi Neels,
      Although we would happily ship PONGO cleaners to you, I know Lesley has found you a supplier in South Africa.
      Let us know how you get on.

  • Mark Crake
    Posted at 13:38h, 07 July Reply

    My grass is 5m by 6m how much will it cost to get rid of smell thanks

    • topdogturf
      Posted at 19:56h, 07 July Reply

      Hi Mark,
      Before we could give you a accurate cost for grass cleaning we’d need to know several things:
      1) How long has your grass been laid?
      2) Does it have a sand infill? (Sand brushed into the grass after installation)
      3) How many dogs are weeing on it?
      4) Where do you live?

      The cost depends slightly on how bad the odour problem is and if we need to vacuum out all the old contaminated sand from the grass.
      There may also be travel costs involved.

      The price is usually between £10 and £15 per metre2 for a full deep enzyme clean and ZeoStop treatment.
      We’re happy to send you instructions on how to ‘Do It Yourself’ and a price for supply the products.

      If you’d like more help or info please drop Abi an email:

      Thank you!

  • Kara Adey
    Posted at 17:15h, 07 July Reply

    Hi I’m based in the East Midlands, very close to EMA airport. Do you have any recommendations of grass cleaners in the area. I have tried everything to get rid of the stench of dog wee but nothing works! I’m getting to a point where I just want rid of it.

    Many thanks

    • topdogturf
      Posted at 19:50h, 07 July Reply

      Hi Kara,
      I’m sure Abi would come and help you sort your grass out and improve the pong.
      It’s only enzyme cleaners that will get rid of the smell permanently.
      Disinfectants just kill the bugs and deodorants just mask the whiff, but the live enzymes digest the wee, stopping the odour build up.
      Unfortunately you may find that the latex backing of your grass has absorbed so much uric acid that you may need to throw it away and start again.
      Drop us an email: and we’ll see how we can help.

  • Brendyn Wahl
    Posted at 22:56h, 23 August Reply

    What us the dilution of this product

    • topdogturf
      Posted at 23:20h, 23 August Reply

      Hi Brendyn, I have emailed you the user guide for the PONGO.

      Generally, our cleaning teams would use 250ml in 5 litres of water for an initial deep clean. They would spray the cleaner solution onto the grass, leave it sit for 10 mins (have a cuppa – check FaceBook) then flush the cleaner with a hosepipe and clean water, down through the grass and into the sub-base.
      They would repeat this 3 more times and then apply a final spray of a 50ml in 5 litres solution and leave that to dry on the grass.
      If you have a new lawn you’ll not need to use as much, and subsequent applications will not require as much cleaner as the initial deep clean.
      Old dog wee is much harder for the cleaner to remove than fresh dog wee, so repeated applications are often required.
      I hope that helps!

  • Melanie Hughes
    Posted at 20:25h, 24 August Reply

    I don’t have artificial grass but I have shingle that my two dogs wee on. I have tried putting watered down bleach as soon as they wee but it still smells. I also used flower disinfectant but that does really work, Would your product work on shingle.

    • topdogturf
      Posted at 23:08h, 01 September Reply

      Hi Melanie, thank you for comment on our blog. Yes the PONGO cleaner will work on pee shingle (see what I did there…)
      But as with all dog toilet areas, drainage is the key to a sweet smell.
      If you have bark, pee shingle or artificial grass the wee and contaminated water need to move quickly away from the surface.

      Have a watch of this short video I made that shows how different drainage methods can affect the smell by leaving urine close to the surface.

      What is under your pee shingle? Might it need re-doing so that it can drain properly?


  • Lauren Cairney
    Posted at 13:03h, 30 August Reply

    Hi I’m having my artificial grass laid this week, I have two dogs and I’m wanting to know how often I should be cleaning it with this solution. Thank you.

    • topdogturf
      Posted at 17:49h, 30 August Reply

      Hi Lauren,
      How exciting! You’ll love it I’m sure!
      If you have dogs the ZeoStop is as vital as a good cleaner. If you’re quick we could send you enough ZeoStop for your installers to lay underneath the grass, and brush into the grass as an infill when it’s laid and looking lovely.
      The ZeoStop is the earths natural deodoriser. A volcanic rock that absorbs dog wee like a sponge and holds on to the ammonia to stop it smelling.
      a 25 Kg bag will cover 2.5m2 on a new installation and costs £29.00 per bag.
      Drop us an email on or call for a chat on 01908 366428

    • topdogturf
      Posted at 22:31h, 01 September Reply

      Hi Lauren,
      I’d recommend you clean your new turf weekly to keep the dog pee under control. As dog wee ages, the uric acid crystals form a crispy shell that’s difficult for enzyme cleaners and other products to breakdown. New wee is easier to remove than old wee, so if you keep on top of it from the beginning you’ll have less pong.
      The PONGO cleaner is very concentrated, so you can spray it on and then turn on your hose with a lawn sprinkler attachment and let that soak the grass for 10 mins. The neighbours will think you’re mad – watering your artificial grass, but hey! That’s how we roll!

      You may want to consider adding some ZeoStop to your grass, as this will absorb the wee like a sponge, and stop it contaminating the grass at all.
      I’m going to email you the PONGO cleaner instructions now.

  • Hazel Goulding
    Posted at 12:11h, 01 September Reply

    I’ve had my grass down a month and I have 1 small dog but it’s starting get to smell . my garden is small how much would it need ?

    • topdogturf
      Posted at 22:59h, 01 September Reply

      Hi Hazel, it’s a shame your grass is starting to smell after such a short time. It’s so frustrating for you. This hot and then wet weather we’ve been having doesn’t help either.

      When it gets hot and humid the ammonia gas becomes heavier than the air, and sits on top of the grass, (at nose level) rather than wafting off into the atmosphere.

      If you read the comments you’ll see I go banging on about ZeoStop being a vital addition to new lawns, but it really will help.
      ZeoStop is a natural deodoriser, and is used in factory farming to remove the ammonia smell from chicken and cattle sheds, it will also prevent bacteria growing on the urine and ‘off gassing’ which is another nasty niff.
      Find our about ZeoStop HERE

      The PONGO Enzyme cleaner comes in 1 litre bottles, and if the grass is very smelly I’d suggest doing a really deep clean / soak for the first treatment. Use 250ml of the PONGO in 5 litres of water. Spray it onto the grass and leave for 10 mins.
      Use your hose to soak the grass, imagine that you’re washing the cleaner through the grass and cleaning the base beneath.
      You can cheat and use a lawn sprinkler attachment, and let it soak itself!
      Repeat this at least 3 more times. Spaying 250ml mixed in 5 litres and then soaking through.
      In warm weather, try to apply the cleaner in the evening, as the enzymes will work for up to 4 days – eating the wee – if they can be kept damp. If they get cooked by the sun they’ll snuff it.

      If you need more help feel free to get in touch and we can talk you through it.


  • Mari Griffith-Edgell
    Posted at 22:03h, 25 February Reply

    Heeeeeeelp!!! My garden STINKS!!! With three dogs it’s getting dreadful and nothing i try seems to work. What are the costs involved with you coming out?

    • topdogturf
      Posted at 19:33h, 12 March Reply

      Hi Mari,
      Sorry it’s taken a while to approve your comment, our website was being tweaked.

      At this time of year (March) with it being so wet and grim we don’t brush in the ZeoStop – odour reducing minerals because it sticks to the grass blades and goes all wet and claggy!
      You can read more about it HERE
      What we can do is deep clean the grass and scrub the blades with the power brushes and use the WEE FREE cleaner to deodorise the sub-base.

      We cover most of England with our cleaning services, but if you could send us your postcode and the size of your lawn I can work out the cost for you.



      Top Dog Clean Team

  • Kelly
    Posted at 07:25h, 25 November Reply

    Please Please HELP ! We have 2 poochies and when we had the grass installed we kept on top of the wee’s he cleaning the grass everyday – but we went on holiday
    A few times and the sitters didn’t clean it like we did and it built up ! I googled it and we bought 2 huge bottles of Pro Kleen grass cleaner we’ve used both and it’s done thing !!!!! We’re now considering taking it up ( such a waste of money – but we can’t stand the fishy wee smell any longer ) please can you advise us ! If we can make sure it’s 100% clean we will keep and make sure that the dogs go for toilets at the other end of the garden to prevent this ! Believe me I go through 3 liter bottles of DETTOL every week and it’s Doing nothing to help ! And the pro Kleen was a waste of time !!!!!!

  • Teana Woodward
    Posted at 14:08h, 11 May Reply

    My grass sits on decking and underlay bought with the grass. What’s best for cleaning this as no sand or soil beneath?

  • Tracey Fabian
    Posted at 18:39h, 07 July Reply

    How many liters would it take to treat a 15 ft by 15 ft area

    • topdogturfsupport
      Posted at 10:11h, 10 July Reply

      Hi Tracey, It all depends how smelly your lawn is and how much wee is under / on the grass.
      I know that’s not too helpful, but for the first 2 deep cleans you can never use too much.
      The WEE FREE twin pack (10 litres £60.00) is the best value and I’d suggest using one 5 litre bottle for the first clean and the other 5 litre bottle 5 to 7 days later and really soak the grass.
      Here’s the link for you and drop us an email if you have any questions

  • julie stickland
    Posted at 12:54h, 20 March Reply

    Hi, I have had my lawn down for two years and was told to wash it down once a year with fairy. Obviously it has worked. The grass is 4.5 metres by 10 metres. What will I need to get rid of the horrendous smell?

    • topdogturfsupport
      Posted at 13:49h, 28 March Reply

      Hi Julie,

      As you already know, Fairy isn’t the right thing for the job sadly. Fairy is a surfactant, which means that it lifts dirt off surfaces. You need a bio-enzyme cleaner like our WEE FREE Sub-Base Soaker. Bio-enzyme cleaners are full of micro-organisms that eat organic matter. Different enzymes eat different things, and the WEE FREE has trillions of wee eaters in it!

      You need to make sure that you saturate the grass as the dog wee will be coagulated underneath the lawn.
      For your lawn I’d recommend that you do a deep clean with a twin pack of WEE FREE (£60) and then a week later you’d do the same again with another twin pack.

      I know this is quite expensive, but if the smell is bad, it means you have a lot of urine built up under the grass. The WEE FREE enzymes need to come into contact with every dog wee crystal in order to digest is, so you need to apply enough for this to happen.

      The Wee Free will work for up to a week, digesting the urine, and then a week later a second treatment will hit any you missed the first time.

      After that you would do a quick weekly rinse with 1 or 2 litres in a watering can or with a hose end applicator.

      If you get stuck get in touch and we can talk you through.


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