Hurts dog.

I thought this would be a great thing to help our dog stop barking but it hurt the dog even on low. It ran continuously even when there was no barking or sound in the house. I would stand close to it and watch it and the green light would light up with no sound at all in the house. Our dog would shake with pain, hid under the bed or in corners when it was on and on low. The dog would stop shaking and act normal when disconnecting the battery after a few minutes and start shaking and hiding when reconnecting the battery. This tells me it is on continuously and not working as it should be. Sad. It is a good idea but dose not work. Returning to Amazon.

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