“I have bought these before and they are ideal for dirty jobs around the car like the bottom of doors and boot. They do wash out so I have used them more than once before disposing of them.”
“These are ideal for all the little places where you can't wash properly. Although you can through them away after the first use they are of a quality where you can use them again. Mostly for dirty areas than you used them for the first time. The description that PB give them is spot on.”