Originally Posted by
SherylM
I wash all of mine on a normal cycle, so maybe it just needs a longer wash cycle.
Though I don't know if you mean the cycle was shorter when you say a "light load".
A "light load" might involve less water, and time, than it takes to completely dissolve the glue? I have no marks, using straight school glue, that I iron dry, even on light, medium, or dark fabrics using a regular warm load setting and a little detergent. Toss into regular setting on dryer, no marks.