Ions are tiny particles that surface, such as bed or sofa, as this could cause the to reduce the hazards of becoming tangled in or tripping pets. To prevent ozone build-up, we suggest using the install the filter. 2. To avoid fire or shock hazard, plug the appliance 1. Clean the outside of the Pet FreshTM Odor Grabber or by calling 1-800-546-5637. carry a positive or negative charge. These ions exist directly into a 120V AC electrical outlet. unit to tip over thus blocking the air intake opening