Old scouting method I learned. It is a compilation of several items mentioned. Basically starts in the fall. I put a grocery bag next to the dryer to put the lint in. Throughout the winter as DW burns those Yankee Candles, I save them when they burn out. As we get closer to spring, I save a couple of the cardboard egg cartons. I heat up the empty jars in the oven. Stuff the egg cartons full of lint (and yes, some with dog hair) and then poor the wax over it (if indoors, make sure you put newspaper down for the mess). Let cool, break into chunks, and stuff in gallon zip lock bags. I've used the citronella candle wax too, but that stays a little soft.