Asking for a friend.

There was a three foot bull snake living under the refrigerator. He liked the heat from the motor I guess. We never had any signs of mice for long. If they got in the house they were pet food. He only came out at night and we rarely saw him. He had a glass terrarium to live in but he always escaped. He preferred being under the fridge.

You can’t hear it but they can seems to work

If those frequencies also had an ill affect on other animals, like other pets in the house. I have never tried them because I would hate to harm the pets, like pointing a laser light into your pets eyes, even just a flash.

Dogs and cats are around 65,000Hz. Mine never seemed to mind it. My dog would stand right next to the speaker wagging his tail

Mice and black snakes. Thoreau never mentioned any of this.

he would be like family. See one and there are 20 more.

We have a vented microwave which may have been how it got in. Wr thought we had a major infestation. We put traps out and found it was only one lonely mouse. I read where most mice won't go in a house with a cat ....the smell or something.

If you caught a glimpse of one there are ten

That they do not like the stinky, strong smell of cannabis. I had to store some high turpine-laden hemp crop in an emergency, hard freeze coming had to harvest all at once, so I chose a mouse infested cabin on the property. The smell drove the mice out of the place overnight. I was impressed, I thought they'd try to eat it.

I have never tried to use any hemp intentionally for this but it was an interesting thing. The deer stopped eating it early in the year so I can imagine other animals were repelled by it.