Are you cleaning the things around your house frequently enough? Test your knowledge below. And remember, these are generalities. If you live with pets, kids or other especially messy folks, you’ll probably want to intensify your cleaning game. Same goes if you have immunocompromised people living with you or visiting.

1 . How often should you wash throw blankets?

a) Every two months

b) Every six months

c) Once a year

2 . How often should you wash bed sheets?

a) Twice a week

b) Once a week

c) Once a month

3 . The duvet cover?

a) Once a month

b) Every six weeks

c) Once a quarter

1 a) This is another category that varies based on who lives in your house. If you have pets and kids snuggling up with your blankets or dragging them onto the floor, you’ll want to wash them more often. But Richardson says that every two months is generally sufficient for cleaning throw blankets, because they don’t come into contact with skin the way that bedsheets do.

2 . b) You should wash your bedsheets at least once a week, to get rid of built-up skin cells, dust mites and odors, says Richardson. The more living creatures (human or pet) that use your bed or the fewer clothes you wear when you sleep, the more frequently you should wash.

3 a) If you’re using a top sheet, you can generally go about a month before needing to clean your duvet cover, says Richardson. (If you don’t use a top sheet, then your duvet cover is constantly touching your skin and ought to be washed alongside the rest of your sheets.) When it comes to duvet inserts, you can generally go longer between cleanings. As long as yours doesn’t make direct contact with people or pets, it needs to be washed only quarterly “because it’s not getting any soil on it,” says Whiteley.