I think this is what an Australian beek referred to on Bee Master as a Chux cloth. Over here they are called Handi Wipes, I think. They're a blue and white speckled cloth type towel. The procedure is to lay one on the top bars and the bees chew it up, trying to remove it. It becomes real fuzzy and catches the beetles by the legs and they can't escape.
Someone tried it on Bee Master and to the best of my memory, didn't have much luck with it. I seem to think it was Ed ( intheswamp ). Could be wrong about that. I'll do a search over there to verify if what I remember is correct.
Please note that I am assuming that this is the same thing. I have not seen it or tried it.
It would be sweet if it would work.