Loaches need to be in a group of at least 3-5 so even the smallest loach won't do for a 10g tank.
If your having a snail problem it would be much better to figure out why your having that problem and solve it

frequently when fish are bought to solve a problem when the problem is solved the hobbyist no longer wants the fish.
Over feeding (a fishes stomach is about the size of one eye) and not getting the waste and extra food out of the substrate are two of the most common reasns for snail population explosions.
carol