HNCSMILE Animal Repeller Bird Repellent - PIR Motion Activated with Flashing LED Light and Sound to Repel Animal Bird Bat Pigeon Away, Garden, Yard, Farm, Balcony Essentials A humanitarian and scientific way to repel bats, birds and other unwelcome animals, Non Toxic, No Poison chemicals. Eco-friendly, Safe to human or pet VERY EASY TO USE: Just install 4 AA alkaline batteries, and select the mode you like. Get rid of noise and damage from unwelcome animals, insect, rats and so on. Equiped with PIR (Passive Infra Red) motion activated sensor to detect unwanted animals Use boath sound wave and flashing light to to repel unwelcome animals, bats, birds etc. from your garbage bins, fruit trees, lawn, garden, and flower beds and fish ponds.s. There are two models for you to choose: DAY MODEL and NIGHT MODEL. Select day model, the product will only use sound wave during daytime, and use both sound wave and flashlight during night. Night model will allow you to use only sound wave during daytime, and flashlight only during night.