patricej

i usually just leave them.
it's the back.

for a very important quilt i will dab a little bit of fabric glue and then trim them.
the glue is probably not necessary. it just makes me feel better.
so far, the best glue i've found (and i have tested several brands) is Aleene's Fabric Fusion.
it dries clear; does not darken the fabric or turn shiny; and does not wash out. i tested it by gluing down a whole patch of fabric. it sailed through washing and dryer.