Was unable to deter any pest, be it dog, cat, squirrel, skunk, or bird when on animal repellant setting. Strobe light seems to work properly and acceptable, but the alarm seems to be either defective or falsely advertised since when triggered the pulsating noise seems weak and minute (on intruder setting). Proximity that is needed to active the alarm is far smaller than advertised, product description states 30 feet, but its more like 5ft. Overall this product loses three stars for not being able to control outdoor pests, but keeps two stars for at least being able to make some noise.