Good Selections Whole House Spider Repeller
This ultrasonic and electromagnetic repeller repels cockroaches, spiders, rats and mice. It covers the whole of a typical 4 bedroom home. The device will not affect you or your pets such as cats, dogs, fish and birds.
This repeller uses fluctuating ultrasonic waves to cause stress to pests and disrupts their normal behaviour - this makes it uncomfortable for them to stay in the same room as the device. The electromagnetic function uses every electrical cable in your home to carry and transmit a signal, which can be detected by pests up to 1 metre from any cable - even inside wall and ceiling spaces. Both of these functions combine to repel the pests and keep them away, without having to use inhumane traps or chemicals.
The device is easy to use - simply plug it in to a standard three pin socket and switch it on. The device will not affect other electrical equipment in your home.
Be aware that after first plugging in the repeller you may see more spiders or roaches for a few days - this is because they have been disturbed from their hiding places.