I will go under the sink and basin areas and put steel wool around the pipe area that is open enough for critters to come through. I will consider the traps, but often they catch the mice's leg and the little thing struggles so.

Heart attack sounds a bit cruel too, but at least they've been given a chance to run for the hills.

So far, no more mice......... I am sure the cats would welcome them back with open arms.......

Thanks for the advice.