Did a search and no recent threads..... We bought the TT late last fall. Didn't really spend much time putting her away properly. I'm guessing the powercord is most likely where they got in, but ...
I Have the name of the green blocks "Tomcat" and the alternative is "RAT" blocks. They work as well. The mouse eats it and goes off to seek water and dies somewhere else. We use them on our farm as they are harmless to cats and dogs.