Using Ammonia for Slug Control

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!

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By Betty


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September 25, 20111 found this helpful
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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.

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July 23, 20170 found this helpful

can u use this on tomatoes plants and green beans

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Anonymous
August 3, 20190 found this helpful

Starting trying ammonia 10-1 mixture and experimented on some hostas that were getting hammered by slugs, new growth on these same hostas hasn't been touched!

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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?

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By Teresa (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.

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It is so hard to clean up after them too. You can't hardly get the slime off...UUUGGGHHH!!!!

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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?

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Anonymous
October 12, 20170 found this helpful

Unfortunately salt is hard on the plants. :(

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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!!

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Newt

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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.

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Susan from ThriftyFun

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February 26, 20061 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.

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By Greg (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.

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The ammonia breaks down in the soil to provide nitrogen. Don't over use, just as you would not overfertilize!

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By Kim Sherrard (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.

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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!

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June 6, 20190 found this helpful

I've been trying this at a 4 to 1 (water to ammonia) ratio on small snails, and for the most part they crawl away. They fall immediately, but do not die. I will now try an strong ratio as suggested, say 1 to 1. With a lot of rain this spring, it's been a feast for the snails.

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July 6, 20191 found this helpful

On full grown and growing hostas if you pull off leaves that touch the ground and the spray a 10/1 mixture of ammonia and water around the base of the plant under the leaves, how would that work on slugs?

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