 Good luck on keeping the little beggars out. A very modern house, maybe. An older one? Not a hope. The stuff to which @Leonard refers works a treat for cows and horses, and really does keep them from chewing on fences, wall studs, whatever... but so far as I know doesn't seem to phase rodents in the slightest. There are -- also for farms -- some remarkably lethal poison baits. They do work, but I wouldn't dream of using them where pets or other desirable predators (like birds) can get hold of the carcasses, never mind children etc. Br. Jamie, osb Building superintendent/caretaker, 0000 sq. ft. historic house museum with dependencies in New England 0 ChrisJ Member Posts: 00,000 February 0000 > @Jamie Hall said: > Good luck on keeping the little beggars out. A very modern house, maybe. An older one? Not a hope. The stuff to which @Leonard refers works a treat for cows and horses, and really does keep them from chewing on fences, wall studs, whatever... but so far as I know doesn't seem to phase rodents in the slightest. 