So, I've got snails in my tank.

Varying things have been going wrong with this tank since I bought it, so I'm not surprised.

Not to many, as I saw two and managed to catch one of those. I figure that one that escaped will lay eggs, and so on...
I'm guessing they hitchhiked on my Anacharis. I rinsed it with water very well, and let it sit out for a bit. I didn't treat it with anything, because I didn't know anything that wouldn't kill it. and also, I didn't really think about it too much.
So what should I do now? Are they a problem? Is it actually feasible to get rid of them, and is it a good idea?