Getting rid of bush snails?

[Paul]

I have tried Metaldehyde , Sluggo, CO2, and submergence -- none proved effective against bush snails. Problems with the first two, from what I have read, does indeed come down to the fact that bush snails are not attracted to the bait. CO2's failure, I suspect, may indicate an ability for the snails to survive lower O2 levels than many other organisms or their ability to windup in little pockets of air in the media that the Co2 is unable to displace. Tried soaking some moss from an infested terr hoping to kill the snails but not the moss. Soaked submerged for 24hrs or so. Kept the moss isolated after draining the water. Several weeks later, checked the moss and did find a live snail. Slimy buggers are survivors. I finally tore the tank down, removed and disposed of all media, cleaned the media off all plants, rinsed them well, then isolated the plants in a small spare tank for several weeks. Thoroughly cleaned the tank then put it back together. So far no snails. Hope it stays that way as it was a royal pain in the butt going through all that.