August 2006

Electronic Ultrasound Bug Repellers

The only thing you likely lose when buying these units is your money.

It sounds like technology at its best: devices emitting ultrasound waves that will drive away insects so your horse can have some peace. They’re available as room/stall units or even small medallion type units you’re supposed to braid into the mane or tail, or hang from the halter. With the attach-on devices only costing around $10, and many indoor units well below $50, what more could you ask for?

For starters, they need to work and there’s no evidence that they do. While a few species of large nocturnal moths seem to react to, and try to avoid, the ultrasonic radar given off by bats hunting for their dinner, not even…