How do you clean plastic combs and reuse them? Wooden frames you melt the wax from and boil. Try to do that with plastic combs and they woun’t fit in the box or anywhere else.
I got some tips how to do. I scraped the comb sides with a knife. Then I hanged the combs in a box. When the bees had stopped flying in the autumn i put these boxes outside without cover for the rain, snow, frost and sun on work them. It makes the wax and cocoon remnants to decay somewhat.
When the spring and flying time for the bees approach I used the pressure washer and the combs became not as new, but not far from.