I have a pair of assassin snails that have been laying eggs like mad. This didn't bother me because they never seemed to hatch. Well, rescaping my tank yesterday I found quite a few baby ones. I don't really have any other snails (some nerites, but that's pretty much it). If anyone needs some I will make them available fairly cheap. Just PM me. I am sure they'd rather help someone clear an infestation than hang out in my tank.