I use different cloths for different tasks. I mark the plastic with the task it is for. I don’t ever put them in the washing machine. I soak them in hot water in a sink and twist until dry. Lay it out to dry fully before putting it back in the bag. I use 2 for my car – 1 for windows & 1 for the body of the car, (this one gets really dirty but just keep rinsing it out). I use one for all the glass, cooktop, granite and mirrors in my home. I use one on the wood furniture. It takes all the old furniture polish that is full of dust and dirt but after a few wipes, the furniture looks like it did when it was new. I did a 10 pack purchase. I still have 3 new ones. I bought these almost a year ago. No more window cleaner, no more furniture polish, no more car polish.