Is there a DIY solution for getting rid of black pepper mites?

Hi Jiy, sorry to hear about your black pepper mite problem. Here's a few tips on how to get rid of them - https://www.hunker.com/13406231/how-to-kill-black-pepper-mites-in-clothes

1. Talk to a doctor or dermatologist if you suspect you may have the disease. A medical professional can prescribe an acaricide that will kill the mites. ...
2. Wash clothes and bedding in hot water. ...
3. Dry clothes in a dryer on high heat for at least 10 minutes.
4. Pack clothes in sealed plastic bags for at least five days.

https://www.hunker.com/12300901/how-to-get-rid-of-black-pepper-mites

Sprinkle some diatomaceous earth around through out your home. Just like you would flea powder.

Start with areas that are not infested/ minimally infested. That way when you get to the highly infested areas there is no untreated place for the mites to go. D-Earth is a great product 4 killing all forms of insects & bugs.

Sorry to hear about your infestation of mites.