Just put three in when you do your laundry!! They'll remove pet hair and lint from your clothes and other items, and you'll be amazed! They also drastically reduce the amount of pet hair left in the dryer's lint trap! You can remove the tangled pet hair and lint every 2-3 days and reuse them♪ Great value for money! Change the number of them depending on the amount of laundry, and replace them with new ones when needed. I'm a repeat customer and bought a lot, so I'm sharing them with you (^^)