I'll buy your plane ticket if you want to come up here and take care of that. :D

Seriously, many of the holes we would caulk are large enough that Bob can lose toys in them. There are tons of the smaller holes. :( We closed up a bunch of the larger ones with FoamCore a while back, and many of the remaining holes are large enough that we would need spray foam to do the job. The landlord left a hole in the wall the size of a beach ball behind the cabinets. :P We can't get to it to seal it. If there were rats in this house, they'd be all over our kitchen.