Precuts are not meant to be washed or dried before use. Maybe you could soak them VERY gently and hang the strips to dry. Otherwise you're losing precious fabric for sure
I've bought MANY precuts online, incl. jelly rolls - and I've never had one come with fuzz balls. They all shed some very fine lint from the pinking, but I've never had problems
Someone before said to vacuum them, sounds like a good idea - or maybe you should return them. Good Luck !! :)