When it comes to buying a mattress protector, there are a lot of different things to consider. Are you unsure about which type of protector to buy? Take these tips into consideration when shopping for one! Pillow covers, bed sheets, and mattress protectors are all part of the bedding essentials; they're what you need to keep your mattress fresh and clean. But there are some factors to consider when buying a new one! Last, be sure to wash the protector often. Dirty protectors can cause allergens and bacteria to build up inside the cover, which can cause problems such as sleep apnea. Wash the protector every week or so and avoid using harsh detergents or fabric softeners. When it comes to buying a mattress protector, there are a few things to keep in mind. First, you need to decide if you need a special mattress pad for one.