vermetid gastropods snails

[Azilla]

Ok i asked a while back about these snails now i tried killin them 1x1 but its very hard seems like the multiply faster then i can kill.
I need some ideas on ridding myself of these?? what can i do?? does anything eat them ??? I feel i will be over runned by them in no time at all.

[marie]

I've noticed peppermint shrimp digging around inside the tubes before. I don't know if they were actually eating them though. What i did notice, was that over time they stopped spreading and started disappearing (even in the tank without shrimp), now, except for a few of the big ones, you can hardly tell they were ever there

[mark]

Fortunately, some fishes such as Copperband butterfly fishes, seem to eat them, and some hermit crabs will eat them as well. Eating these worm snails may well be the only truly beneficial effect of hermit crabs in aquaria

from http://www.reefkeeping.com/issues/2005-01/rs/