Add to GuideAsk a Question
To Top

Using Ammonia for Slug Control

Used in the proper proportion ammonia to water, many gardeners have had success in controlling slugs by spraying with this mixture. This is a guide about using ammonia for slug control.


Share on ThriftyFunThis guide contains the following solutions. Have something to add? Please share your solution!

October 13, 20040 found this helpful

This is for slug control. I mix sudsy ammonia with water, half and half (they really won't crawl away from this mixture!), or a little more water and put it in a spray bottle. You can spray this solution right onto the flowers and plants and it doesn't hurt them. That way you get all the baby slugs that the mother has lovingly placed to feed on the tender parts. It works great. Happy slugging!

By Betty

Comment Was this helpful? Yes
September 25, 20110 found this helpful
Top Comment

9/25/11 - I read about using ammonia and water spray for slugs yesterday, so decided to give it a try. The slugs are worse this year than ever before. I sprayed a very large slug with 6 parts water to 1 part ammonia. It immediately started to disintegrate. I went out a few minutes later, and it was completely gone.

I had used a bucket of water, ammonia and dish detergent to drown them in and that worked too. But I like the spray better and it works so quickly. I had planted several little mum plants last weekend and the slugs defoliated one of them in one night, blooms and all! The spray didn't seem to hurt my plants at all, so I think the 6-1 ratio is safe for any plants. I've been gardening for over 15 years, and this is the best solution I've found for slugs.

Reply Was this helpful? Yes
October 13, 20040 found this helpful

So, you are saying that I can mix this solution up and give all my plants a really good drink, one time per summer, and I should be slug free for the year?? Does it, for sure, not harm my plants? I have some expensive ones that I don't want to lose. What does the ammonia really do?

Reply Was this helpful? Yes
By guest (Guest Post)
October 13, 20040 found this helpful

I like the idea of getting rid of slugs. They crawl on my french doors all the time and make awful messes. It is so hard to clean up after them too. You can't hardly get the slime off...UUUGGGHHH!!!!

Reply Was this helpful? Yes
October 13, 20040 found this helpful

Slugs also hate salt water and stale beer, both of which are less toxic to deal with around kids and pets. I sprayed the outside of my trailer with salt water and cut the population in half--- just in time for my strawberries.

Now does anyone know how to keep the bunnies from eating my rose of sharon shoots?

Reply Was this helpful? Yes
October 24, 20040 found this helpful

I will warn you that I was told to do this when I was a very new gardener and had a slug infestation. I happily went out 'slugging' at night with my flashlight using the recommended method and arose in the morning to alot of very dead plants!!


Reply Was this helpful? Yes
October 24, 20040 found this helpful

I've always found the stale beer in the short pet food tins works good. Just put them around the garden and the slugs love the beer, get trapped and drown. You need to replace it every day for a while. Also copper tape works well for protecting a small bed. Coffee grounds repel them also so pick up some of the used grounds from your espresso stand and circle the bed you are trying to protect with them.

I'd use this sparingly. I haven't tried the ammonia spray but if you use it, I'd mix it 1/4 to 3/4 water and spray lightly on plants. Ammonia is in some fertilizers but spraying it concentrated on the plants seems like it would kill them.

Susan from ThriftyFun

Reply Was this helpful? Yes
February 26, 20060 found this helpful

Hi Newt20

Are you still around -- it is now 2006, I have just started using message boards. Just happened to see your sad posting about your dead plants Your solution was too strong! Of course they died. I have been using ammonia for years. It does not hurt my plants except there are cautions. Do not spray on potatoes, and I have never sprayed zucchini. I do not spray on my greens such as lettuce or chard because I do not know whether that is healthy. I understand that some people do (use on lettuce, etc.) But I spray grass (there used to be tons of slugs on the grass). I use on roses, tomatoes, carrots, beans, all my flowers. Spray in evening, morning, or even when it is raining. The slugs just disintegrate. There is a lot of info on the Web sites -- just search for "slugs and ammonia". My sister uses a solution of 16 cups water to one cup of ammonia and she sez it works. I use mixture of 7 cups water and 1 cup of ammonia. I do not use the sudsy ammonia, only the plain kind that you get in the cleaning sections at the supermarket. Whenever I try a homemade solution on plants, I always test on a small portion first. Interested to know if anyone else uses and how.

Reply Was this helpful? Yes
By guest (Guest Post)
March 26, 20070 found this helpful

I use 1 part ammonia to 2 parts water, and avoid spraying the plants. Just squirt the slugs. The ammonia breaks down in the soil to provide nitrogen. Don't over use, just as you would not overfertilize!

Reply Was this helpful? Yes
By guest (Guest Post)
July 31, 20070 found this helpful

It was great to read all of the ways of getting rid of slugs in the garden but i have a problem in my front living room?Because i have no carpet and just varnished floorboards they seem to come in the smallest holes under the skirting boards. I would love to pull a board up and spray the ammonia mix all under the floor but im a little worried about the smell it would have. I thought being as though it was indoors this may be a problem? Can anyone help? Many thanks ,Kim.

Reply Was this helpful? Yes
March 2, 20170 found this helpful

Does anyone know if this would work on flea beetles..i am infested with them and they love to eat just about everything. Please help!

Reply Was this helpful? Yes
Related Content
In These Guides
Slug eating a leaf.
Keeping Slugs Out of Your Garden
Slug on a Leaf
Getting Rid of Slugs
Home and Garden Pest Control Slugs and SnailsFebruary 27, 2017
Slug on Lettuce
Use Beer to Prevent Slugs
Egg Shells
Use Egg Shells for Slug Prevention
A rubber gloved hand cleaning oven racks with a pink sponge.
Using Ammonia for Cleaning Oven Racks
A person wearing rubber gloves, cleaning an oven.
Using Ammonia as an Oven Cleaner
Summer Ideas!
Fourth of July Ideas!
Father's Day Ideas!
Ask a Question
Share a Post
Desktop Page | View Mobile

Disclaimer | Privacy Policy | Contact Us

© 1997-2017 by Cumuli, Inc. All Rights Reserved.

Published by .

Generated 2017/06/20 09:17:27 in 5 secs.
Loading Something Awesome!