Hi, I use one of the laundry bags that you would use for your bra's and wash the squares in that and dry them in the bag also. So far I have been pretty lucky and very little fray. But I use the gentle cycle on the machine. I do use the dryer as I want to be assured of the shrinkage. I have received squares that I did not know if were washed and have always used this method with pretty good luck. Hope this helps. :?