These nifty little covers have thyme extract vapors, a natural antibacterial agent ‚that sterilize your toothbrush and protect it from aerosolized droplets. Steripods are a clip that with one hand can clip right over the head of your toothbrush.
These are recommended to change every three months. Be sure to use a Sharpie and write on it the date that the head should be replaced so you don’t forget. Another brand is Dr. Tung’s snap-on cover with refills. These have little discs with the thyme vapors that you change out every two months.
Not all covers are the same. Storing your toothbrush in an airtight container is not recommended as it can actually promote bacterial growth.