"The units main defence against rodents is via an electronic pulse that it sends round the house via the ring main (plug sockets) ,this creates a sort of invisible barrier. This means the rooms such as a loft may not be protected due to lack of plug sockets."
"After laying countless traps thought I would give this product a go. What a complete waste of money, the mice actually ran right in front of it without so much as a flinch! Stick to the traditional traps baited with chocolate or peanut butter spread."