How do you stop bashers?

If you want tips try http://www.kallex.de/lemmings/hints/tips.html

As for stopping a basher, a basher will stop if:
a)It is assigned another non-permanent skill.
b)There is no more to bash.
c)It falls.
d)It hits steel.
e)It dies.
f)It exits.
g)You run out of time. ;P

Turn the basher into a builder, a digger, a miner, or even a blocker or bomber. Or of course, reach the end of a wall :P

guest beat me to it  X_X Well, that and he was arguably more helpful. :P

WOW Shvegait, you replied about one second after me!

I'm rather more curious which level is it that's making Claire Ruston ask this question.  ;)

Taxing 8, perhaps? (Sorry if I'm wrong, just seems the most plausible guess.)