Rolling Stone put together this list of expert tips for cleaning your masks to give them a longer lifespan, and keep you safe. Read more here https://www.rollingstone.com/product-recommendations/lifestyle/how-to-wash-face-mask-cleaning-1026091/
- Use a bleach plus water solution.The CDC recommends using 5 tablespoons (1/3rd cup) of household bleach per gallon of room temperature water, or 4 teaspoons household bleach per quart. Let your masks sit in the solution for at least 5 minutes.
- Use warm, soapy water.This is a great way to clean cloth masks, and won't be a respiratory or skin irritant like bleach can sometimes be.
- Use a washing machine.Using your washing machine should be sufficient, but make sure to dry using your dryer's hottest setting. Also use a detergent that's strong enough to "break down sweat, grime and oils that may be clinging to the mask material."
- Try a UV sanitizer.A portable UV sanitizing device works on phones and other accessories, but can also work on masks.
- To fix a loose mask (via Lifehacker): Fold the mask horizontally to put the two corners with the same earloop together. Then tie a knot as close to the mask as possible. Tuck the resulting point inside the mask, which closes off the gap.