Repellers for deer and other animals such as rats, mice and bats ultrasound.
Flaslight and radio speaker deters animals without harming them. Batery powered for a esy set-up. with PIR detection to conserve battery life.
Practical anti rats, mice, cockroaches and bats for home safe and completely harmless device because it uses no chemicals. For indoor and outdoor use (as long as it is protected from the rain).