We have had many customers who first tried to use such methods to stop mice or rats, but they ended up calling us after it failed. Traps don’t seem to work well in London, humane or otherwise. The mice here seem to be extra cautious, and avoid new objects. Even if you were to catch a few, the other mice soon learn to avoid these traps after that. As for natural methods, we have never found any that work. Some people try peppermint oil or ultrasonic devices to deter mice, but these seem to do nothing more than annoy mice at the start. But they soon get used to them and ignore these things. They aren’t enough to deter hungry rodents from seeking out food in your home.