LawnMutt Soil Amendment for dog urine grass repair and protection - Large Bottles


Regular price $69.95 Sale

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LawnMutt is a soil amendment for dog owners that want to stop the urine damage to their lawn.

The 32-ounce and 64-ounce bottles are ideal for lawns larger than 2,500 sq ft. If your lawn is smaller than 2,500 sq ft be sure to check out our convenient 2 application bundles here:

LawnMutt 2 Application Bundles

LawnMutt restores and enhances the soil’s ability to metabolize the excess nitrogen contained in dog urine. Dog urine, as well as fertilizer, is processed by bacteria in the soil in a process called the Nitrogen Cycle. LawnMutt increases the population of healthy bacteria in the soil and improves its ability to digest the large quantity of nitrogen present in dog urine.

Once you complete the Start-Up Phase you can enjoy a spot-free lawn with easy applications every 6-12 weeks, depending on the lawn size and amount of urine.

When used regularly LawnMutt will give you a healthier, greener lawn that is more resistant to dog urine damage as well as heat stress and some funguses. 

For a more in-depth understanding of dog urine and the damage it can cause to a lawn we have a more extensive article here:

Guide to Understanding Dog Urine Grass Repair and Protection 


If you are new to our products we would love to help you get started. We encourage all our customers to take advantage of our Exclusive SoundStart Program.


Are you ready for a Spot-Free Lawn? Let’s get started.

1. Decide on the amount of product needed per application. The amount of LawnMutt needed depends on the size of your lawn. We recommend applying 1 ounce for every 100 sq feet in the beginning. (If your lawn is 2,000 sq ft you will want to apply 20 ounces per application, for the first few applications). We recommend treating the entire lawn available to your dog, not just the spots.

2. Purchase enough product for 2 applications.

3. Plan on a way to apply the product. We recommend an Ortho Dial-n-Spray applicator, but any applicator designed for liquids will work. A Miracle Grow applicator works differently and will not evenly apply the product. If you have a small area you can apply with a pressure sprayer or watering can just make sure to water well after applying.

4. Apply the first application upon delivery and the second application 4 weeks later.

5. MOST IMPORTANTLY,  contact us a few weeks after the second application, and let’s review the progress. 
Depending on the severity of the urine damage some lawns can require 3-4 applications to make significant progress. 

If your lawn is not responding after the second application, applications 3-4 are on us free of charge. We can be reached through our online chat program or by email at jeff@soundsoil.comIf you still have additional questions, please contact us so we can help.

All but the most severely damaged lawns will be free of new urine spots after 2-4 applications. The old urine spots may grow back if there are any viable roots but will likely need to be reseeded over time.

After completing the startup phase and the new urine damage has stopped you should be able to spread the applications out to every 8-12 weeks and see how the lawn responds. The further into the program you get the longer you can go between applications. The soil gets better at filtering the urine over time and repeated applications.


To help keep your applications on schedule we now offer a Subscription Service. Save 10% when you sign up for regularly scheduled deliveries.


Customer Reviews

Based on 42 reviews
Nicole schroedermeier (Sioux Falls, US)
Very helpful!

I had terrible urine spots in my 1.5 year old sod after we got a new puppy and a rough winter. Other products including diet supplements didn't seem to do much. Jeff with the sound start program has been great helping me repair my lawn and explain what to expect through the process. My lawn was starting to improve significantly this fall. I am excited to see how we look next summer.

Keith Corder
Lawnmutting it in Alabama

Jeff at Lawnmutt was awesome. He actually got on the phone with me and viewed pictures I was sending him of my yard. That type of customer service s hard to find these days. I HIGHLY Recommend Lawnmutt to everyone.
Keith in Alabama

h. (Salt Lake City, US)
Lawn Looks Healthier

We water our lawn via a sub-surface drip system. It uses less water, but urine salts do not get washed down like they would with a sprinkling system. So, while we still have some yellow spots from our 3 dogs, I am really impressed with how much Lawn Mutt has helped the health of our grass overall.

Thank you for the review. I am always glad to hear are products are helping.

Let me know if you need anything from us.

You can reach me at

G.L. (Brownfield, US)
Finally, a solution to dog urine spots that's gonna work!

Like many of you, I was skeptical about LawnMutt working after having tried and failed with so many other products. I've been so impressed with the efficacy of the product and even more impressed with Jeff's interest and participation in formulating a game plan to attack my dog-urine spot problem. I appreciate so much his his advice and instruction. He is a valued partner in this venture. After 2 applications I'm beginning to see some improvement. I will alter my fertilizer use and continue using LawnMutt on a monthly basis. Jeff graciously sent enough LawnMutt for 2 additional applications, but I have so much confidence in the product that I purchased a 64 oz. bottle to have it at the ready for monthly applications. Stay tuned. Give me a few months to get my soil rehabed and I'll give you an update. Optimism reigns!

Susan Luff (Manhattan, US)
A true plan for yellow spots

We have two female dogs and their urine has been greatly damaging our newly sodded backyard. We tried many supplement pills which worked initially, but after a long winter where their urine builds up in the snow pack, the spring thaw showed dead grass everywhere. Jeff and his team with their LawnMutt product have finally given us a different approach for a longer term solution. Their product helps the grassroots to grow much deeper and therefore less susceptible to the overdose of Nitrogen in dog urine. The company has excellent customer service. They are big on personal communication to help you resolve your particular situation. Very thankful to have found this company.