My " field" is very close to my home and I deal with only 12 hives...I put the plastic excluders in a large plastic bag which I place in the freezer for a couple of hours. After you can bend them gently and most of the wax and rubbish blisters off. Very easy.sqkcrk,
How are you cleaning your plastic excluders? Is it something you do in the field or are the brought back to workshop in the off season?