I would imagine a bleach dip would kill them. There is some recipe for the proper proportions of water to bleach on the internet. I think that the snail terrors people describe are kind of funny. Personally, I control population through the amount of food I put into my tank. I can understand, however, snails becoming pests when they eat eggs and such. -Bryan _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member