Bug zappers can certainly be used indoors - in actual fact, that's certainly one of their primary makes use of. Chemical bug zappers, Zone Defender which lure bugs with harmful chemicals, are generally used outdoors to minimize contact with children or pets. However, Zap Zone Defender bug zappers that attract insects with ultraviolet light draw little electricity, are pretty inconspicuous (other than the electric crackle when a bug is zapped), and can be utilized indoors or Zone Defender outdoors. Some appear like lanterns, some resemble little heaters, some run on batteries, Zone Defender and some can be plugged into a wall outlet. Some zappers come with a removable tray that catches the remnants of zapped bugs