My understanding that some varities are lawnmowers and others not so much. I would keep them well fed and just keep an eye on your softer plants like vals and chain swords they really seem to like those.
Mine ignore the jello, they go for, kens veggie sticks, fresh veggies, and algae discs. By the way MsJ, I think I spotted a little one, but am not sure because I also have mts in the tank and it was closed up at the time so I couldn't see the color of the foot. But the shell looked black and then just a bit of white on the end. Keep your fingers crossed.
yeah i was thinking of getting some jokers they would fit me nicely. do they populate fast or do they have special requirements for breeding? im not looking for a snail to take over the tank. do they get along with nerites?