Use in my rain barrels. They are easy to use. Just drop one in per month to kill mosquitos and any larva.

This is the only thing that I've gotten that has started to reduce the insane mosquito population in the new house I got. There are swarms of them because there's a fountain, and I tried using bleach to kill the larvae but that did nothing. I tossed one of these in and overnight there were a ton of dead mosquitos in the water and I could tell there were less flying around as well. Highly recommend!

We have had plumbing issues and mosquitoes have been nesting in the drainage around the pipe. We have small dogs, and needed something safe to put in drain to kill the mosquitoes. These can be crumbled and put down the drain and will not harm other animals. The package come with 6 disks, the price was good, and most importantly, they work.

No mosquitoes breeding in my little pond. If the raccoons don't eat them, they last almost a month.

This works great for our fountains, bird baths, and rain barrels. Just toss it in and forget it until the donut has dissolved. Works every time and is safe for other critters.

Got this for my duck pool and dog drinking pool and it works fast and is very efficient. Didn't work as long as I expected, but that could be because I only used half of what it suggested for amount of water to make sure animals did ok with it. No one got sick and mosquito population decreased, so I'd call it a win!

I am satisfied with how quickly my houseplant stored water was completely rid of mosquito larvae. Results were obvious in one day.

These tablets DO NOT WORK! DO NOT waste your money on this ineffective product.

I'm embarrassed to admit the pool was left in a swampy condition this year. I purchased these to keep it from becoming a mosquito factory. These MUST WORK because no mosquitoes were seen and no one was bitten by a single mosquito this year. I used a whole package of 6 dunks in a 10K-12K gallon pool.

I ended up with fungus gnats from soil I bought for indoor plants..and tried everything; alcohol, h2o2, soapwater...and nothing really controlled it..then I found these...and while I do see an occasional one and will continue to use till they are gone...it is 99.9 better! 1/4 of a piece in a gal of water, let sit overnight and water away...I keep using it till it finally dissolves and replace it.

worked for us. the blood sucking swimmers floated to the top by the end of the first day.they were dancing on the surface of the water.i noticed birds hanging around there a lot the next day.then no more mosquitoes in the water.like that it's natural and safe for the birds.

Works well. Use for houseplants. Great value.

Easy to use, safe method of controlling mosquitoes. Just add to water, you can break the Dunks apart, as you'll only need about one quarter Dunk to control mosquitoes in a standard bird bath. Mosquito Dunks use a bacterial agent that kills Mosquito larva. Just place in the water and larva are dead within twenty four hours. Non toxic, so safe to use in bird baths, pools, planters, wherever water accumulates. Noticed larva in my planters in my indoor arboretum. No place for toxic chemicals, due to the fish tanks, and my plants. Put one fifth to one forth of a Dunk in the planters where water had collected. No more larva, no more mosquitoes in my house. Had a birdbath that was black with larva. Put in one forth of a Dunk that morning. Mass die off by the end of the day, complete kill by next morning, with no worries about wildlife or the birds. Non toxic. Follow the directions, safe indoors or out. Just wash your hands after handling, and you're good to go, and mosquitoes aren't. According to the instructions, one treatment should last about thirty days, though the Dunks have washed out of the birdbath in a very heavy rain. So keep that in mind, otherwise a great product that does what it says it will do, eliminate mosquitoes.

Excellent product.

Used it for an unused swimming pool that holds water. Throw one or two in every month. Mosquitos disappeared.

Wow, killed them skeeter larvae quick!!

These are great to throw in the pond and stop mosquitoes from breeding. I break them up and soak them in my water that I water plants with so that it is also in the plants and they don't get gnats. This is a very useful product for any standing water.

For a day or 2 it seemed like it actually attracted more Mosquitos, but then the number seemed to drop off. Now not nearly as many mosquitos around our fountain.

I bought this because I was looking for something safe to kill mosquitoes and to put in my rainwater that I catch in a barrel to water my plants, This worked great exactly what it say it will do

Got rid of the mosquito menace without effecting the birds using the birdbath.