PetSafe No-Bark Birdhouse - $54.99

Whenever your dog or your neighbor's dog barks, he will hear a safe, high-pitched sound (inaudible to most humans) that will cue him to stop. Modeled to look like a birdhouse, the bark controller is battery-operated and has three settings plus a test option. This unit can hang in a tree, on a fence post or anywhere outside. Detects barks up to 50 ft. away. Durable and weatherproof. Two-color LED for good/low-battery indication. Runs on one 9-volt lithium battery (not included). Gender: Male. Age Group: Adult. - $54.99