I toss them in the washer in a delicate cycle then the dryer. Deal with the threads after, it is not that bad, and you have well prepared fabric.

Many times I don't wash them! OOPS, I guess. When I wash smaller pieces of unknown origin, I do as others have said and put them in the sink with warm to almost hot water and let them soak for a little while, I wring and press dry. I am more concerned with bleeding than shrinkage. The thought of washing all of those FQ's is....daunting. But perhaps I should start on the task just to be sure.

I use the same method as mad quilter at times I have had sandy dirt was out of them

I wash all fabric by hand so don't have a problem.

I hand wash mine. No fraying that way

I put mine in a mesh lingerie bag and toss them in the washer

I've learned that if I serge around all of the cut edges of my fabric I can wash it without any ravels at all. I do it on large and small pieces. I just fold and store them until I'm ready to use them. Then of course I prepare them for use by ironing them with starch if needed.

if you have a salad spinner--- that workd great for small pieces---just wash in the sink and spin then dry however ---works for me

Lingerie bag is what I use for washing FQ

Call me lazy :D r call me a rebel :D but I toss mine in regular cycle in my washing machine with color catchers... all colors, do not seperate.... and mine come out fine. I do keep a small pair of scissors by my dryer for strings but rarely find it a problem. Guess I just don't have the patience that a lot of you have. :D