Whoa does that work ok? I have a pond snail outbreak happening in a tank with RCS & that would be much quicker then throwing them outside.
This will 100% work. Start off by squishing any big ones you find, this'll stop the egg production. Using your finger works best :P! When the pond snail population starts to get lower to a tolerable level, only squish babies. The adults will keep making eggs so you have a never ending free food supply for shrimp
And it's super funny watching shrimp fight over a smooshed snail.