Summit Pack of 2 Peak Mosquito Slam

Perfect, thanks had all died in just two days

This really works I'll definitely keep buying.

Mosquito Dunks are a really convenient option for dealing with mosquitoes anywhere standing water tends to collect. I like that you simply place them in the water and let them work rather than having to constantly spray the area. They're especially useful for things like birdbaths, rain barrels, planters, gutters, and other places around the yard where water can sit long enough for mosquitoes to breed. The dunks target mosquito larvae in the water, which makes a lot more sense to me than waiting until you have clouds of adult mosquitoes flying around. I also like that the dunks can be broken into smaller pieces when you're treating a smaller amount of water, so you don't necessarily have to use an entire one at a time. This two-pack is handy to keep with the outdoor and gardening supplies during mosquito season. Simple to use and a good preventative measure for those little pockets of standing water that are almost impossible to eliminate completely.

Seems to work but need to trial in larger outdoor ponds

These things are worth their weight in gold in fighting against mosquitoes.