I use binding clips. I have 5 to 10 pinned about every inch or two when I'm binding.
I make large quilts and I just don't trust the new low flow washing machines will get all of the glue out.
I even took a quilt to a nice laundromat's big washer to wash it and it ended up smelling like someone else's detergent. This has happened twice. I use Tide Free since I'm allergic to most fragrances. Ewwww
Clips work for me. ��