How it Works BirdXPeller PRO features birds' distress cries on a microchip (supplied by a major American university). The birds perceive danger when they hear these sounds. They become agitated and disoriented: they think their flockmates are in trouble so they flee the area... never to return. Species-Specific and Programmable Target your birds with a species-specific approach - not scattershot. There are eight bird sounds on the unit, so choose the ones that are invading your space! In fact, some of the eight are predator calls - if you add these to your program, you'll give the birds even more of a sense of danger. Then, if you need to repel different birds in the future, simply re-program your BirdXPeller PRO.) In addition to programming the selected birds, you can also program volume, time off periods (between sound blasts), and whether the bird sounds play in random or sequential order. These programming options make it virtually impossible for birds to get used to any one pattern. Harmless BirdXPeller PRO attacks the birds with loud, terrorizing sounds, but it doesn't harm them. Easy Operation. Use with standard 110vAC electricity (adapter included) or purchase a 12vDC deep cycle marine type battery instead. A solar power panel is available for use with a battery. Heavy-duty. BirdXPeller PRO is made of sturdy plastic - powerful directional speaker with convenient controls. Coverage. Up to an acre at full volume, in a long oval dispersion pattern. If you are not satisfied with the performance of this electronic unit, within 30 days from the shipping date, it may be returned at the customer's expense, for credit (less shipping, handling and a 15% restocking fee). Written authorization and a returned goods authorization (RGA) number must first be obtained from Premier Ponds. BXPPRO1Targets: repels pigeons, starlings, sparrows, gulls and woodpeckersrepels crows, blackbirds, grackles, cormorants and ravens Most Orders Shipped Out Same Day! Premier Ponds LLC pondinfo@premierponds.com U.S.A. Copyright © 1999 - 2007 Premier Ponds LLC, North Salem, New York. All rights reserved. Thermo-Pond Heater 3.0, Aquascape Designs Pond Kits, ScareCrow Sprinkler, Nursery Pro Micro Pond Kits, AquaClearer, Microbe-Lift, Great Blue Heron Decoy, Pond Liners, Thermo Pond Heater & Deicer, Premium Koi Food, Select Koi, Butterfly Koi, Pond Aeration Pumps, Flexible PVC Piping, BioFalls, Skimmer, Aquascape Pumps, Cat Stop!, Animal Control Products, Pond Netting.