Skip to Content

How to Neutralize Cat Urine in Soil — Step-by-step Guide

How to Neutralize Cat Urine in Soil — Step-by-step Guide

Sharing is caring!


Are your houseplants being used by your cat as a toilet? Not only does it not smell great, but cat urine can also change the balance of the pH in the soil and could damage your plants and flowers. Well, help is on hand.

In this guide we will take you through all you need to know to neutralize cat urine in soil. 


How to neutralize cat urine in soil

Firstly, rinse the soil out thoroughly so that the water flushes right through. Then, let the plant drain and dry out. A mixture of two parts water to a part baking soda can then be sprayed on to the plant – this will remove any remaining odor. Afterwards, place some cat deterrent materials on to the soil – you can either buy a spray or try adding things like rocks or even tinfoil.


Step 1 – removing the existing urine from the soil


Wash the soil out with water

The first step is to try to remove as much of the urine as possible. That will help firstly with removing the smell, but more importantly, it will flush the urine through the soil. 

Firstly take your houseplant outdoors. Then use a hose or watering can to water the top of the soil enough so it drains right through.


Make sure the water drains correctly

The key is to flush any urine through the soil and out to the other side – but the water needs to drain fully through the soil.

This is to ensure that the plant does not suffer from any conditions caused by damp soil – such as root rot.

Once flushed, place the plant in a warm or sunny location to help the soil begin to dry out.

Then, you shouldn’t water the plant again until the soil has dried right out. This will usually happen within about a week or two. 


Neutralize any remaining smell

A simple mixture of one part of baking soda to two parts water sprayed on to the soil will assist with taking out the remaining smell in the soil. 


Remove some of the existing leaves

If the plant is particularly large, or if your cat has been urinating on it for an extensive amount of time, it may be best to trim it back a little in order for it to bring fresh regrowth that hasn’t been affected by the urine. 


If all else fails

If you find that your plant still fails to thrive despite these measures, you might need to replant the whole thing in new, fresh soil. 


Step 2 – taking preventative measures

Urine removed, the next step is to make sure that your cat stays away from your plant in the future.

There are a lot of tips and ideas going around online – some aren’t exactly cat friendly (such as putting disposable forks upright in the soil, or filling your plant pot with pine cones!)

In fact, there are a lot of tips that include adding things to the soil that will deter your cat from paying your plant a visit.

Try putting tinfoil over the soil – cats hate the noise and feel from walking on it. 

You could also try a clear plastic screen, cut to the shape of the pot, to prevent your cat urinating directly on to the soil. Another method is to put large rocks into the pot so that the cat cannot dig at them (this is usually what they do when they “go”)

There are also commercially manufactured cat deterrents available on the market.

These get decent reviews and it may be worth a try if you keep experiencing the same issue over and over. Amazon offers an extensive list


Frequently asked questions about how to neutralize cat urine in soil


How do I get my cat to stop urinating on my plants?

Try to put something directly on the surface of the soil that will deter your cat without harming it or the plant. Tinfoil is a good solution, as is a clear plastic cover. You can also buy cat repellant sprays. 


How do I get the smell of cat urine off my plants?

You will need to completely rinse the plant from head to toe and wash out the soil in order to get rid of the smell. 

Then, neutralize any remaining smell by mixing one part baking soda to two parts water in order to make a spray. This should help take out the rest of the smell. If not, you will need to repot the plant. 



It sure is annoying and a little smelly if your cat continues to urinate in your houseplant. Follow this guide in order to keep your plants healthy and smell-free! 

How useful was this post?

Click on a star to rate it!

Average rating 5 / 5. Vote count: 1

No votes so far! Be the first to rate this post.

As you found this post useful...

Follow us on social media!

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

If You Love Gardening & Houseplants, Please Share

Help spread the word. You're awesome for doing it!