The brighter the better on the lights. Night time varmints don't like the color red either. So you might get some red ones as well.hmmm I'm thinking it might be a weasel because the holes are too small for a raccoon but too big for a mouse. Solar lighting sounds like a good idea! Walmart sells little lights for $2 each. I'll buy some today. I would like to catch this thing so I can relocate it though!