CLEANRTH CB006 Advanced Ultrasonic Bat Repelling System | Demands Bats to Leave! Cleanrth CB006 Ultrasonic Bat Repeller w/ Ultra Intense Repelling Technology Latest technology and improved speakers broadcast intense ultrasonic bat repelling sounds Dual speakers project two powerful ultrasonic sound streams creating an unbearably chaotic environment for unrivaled bat control Multiple Bat Repelling options, including chaotic and variable modes for Bat Targeting, Confusion, and Power 1-Year Money Back Guarantee & Warranty on all Cleanrth devices