Dr tanks snail remover
"I had some ramshorn snail invasive species in my tank that came in on some driftwood, and plants. I kept squishing the ones I find, but then I found new generations of smaller babies appearing, and I didn't know where they were coming from. After using doctor tank's snail remover for3 days as directed. Eventually a large snail rose up the tank and I was able to squish it. I think it may have been the female that was laying eggs and hiding in the gravel. I didn't take any chance I squished all snails that rose up the glass. Now I am snail free"