We've found that the bees don't like the plastic frames. We do use the wax coated plastic foundations but some you order don't have enough was on them. You need to rewax these. We are going to a three quarter inch waxed strip in brood frames. The right combination of bees will draw the comb in no time. By just using the strip, in makes it a lot easier to recycle the wax when it gets dark colored.
