As I use Elmer's Glue when assembling my quilts, especially on the binding, I'll always wash my quilts before I give them away. Also I want to know if one of my fabrics will bleed so I use the color catchers to be sure. I don't want to think something I've given away as a gift to someone has caused that person grief when they go to wash it themselves. Rather be safe than sorry plus I think it gives the person relief to know they shouldn't have any problems when they go to wash it. I always tell them this gift is to be used and abused if necessary..............as I found one person was afraid to use it cause she thought it too nice to use. I tell them its already been walked on as my sewing room at the time was not large enough not to walk on it while assembling it.