Have got mice.

Killed two in traps (the sprung "splat" variety) baited with a large
pile of poison:

http://www.epinions.com/Woodstream_V...Pest_Co ntrol

But we have a third - it just eats all the poison - and the trap does
not go off ! It's really strange - done that four times now, so I guess
it's very sick..

The traps (I have four) just do not seem to be sensitive
enough...though they worked on two.

How many mice should I expect in a "nest" ????

Thanks