How to catch smart mice that avoid anything that remotely looks like a trap?
Every time I have dealt with a rodent issue they ALWAYS eat the poison pellets.  Now can you live with a dead mouse somewhere?  Maybe it isn't the best inside way to catch them.  But if you hit them with pellets all along the outside of your house 2-3 heavy sweeps over a course of a few months they will all be dead or close.  They share food when close.  I have done this on a couple houses and I not only killed the mice but didn't notice a chipmunk or squirrel for a while.  I would try this even if you have an inside problem because often they will nest outside right by your house.