clothing donation pick ups

Used clothing and collectibles or gift?
Hello, I'm moving in a few weeks and have lots of clothes, pillows and blankets, etc. I feel bad taking it to a dumpster. I called the Purple Heart and was told to not pick up no dates available soon. Does anyone know where I can withdraw boxes were not used (as Army SR) or anyone can pick it up? I'm in Gaithersburg, MD Thanks for all your help!
I use Amvets, get almost everything, and bags of clothes. Just call in your area to pick up date.
Mike Hranica SHIPSHAPE Clothing Line The Devil Wears Prada