I am certainly not aware of you selling anything on the forum. HM does, but I don't see anyone complaining
This is the sort of thing that riles me. HM most certainly does not set out to advertise anything. His references are from others; he advertises his product no more than Karol. Both advertise absolutely zilch, as far as I am aware.
I would recommend something that catches a minimum of wasps over drawing the whole wasp cohort into the danger zone of the hive. I find that early founded colonies are easily up to the job of either repelling , or killing, the relatively few wasps that try to enter my hives (given the benefit of a reasonably sized entrance before any concerted attack).
I have lost two colonies to wasps this year. The idiot that stole them and then returned them, after plod belatedly got on the job, was the singular cause. The idiot moved them a short distance after the theft. He then moved them back after approx two weeks. Anyone with any beekeeping sense would know how that would affect a nucleus colony with a virgin queen. Both colonies were queenright before the theft as was a third, smaller nuc sized colony, made up at the same time. That smaller colony has thrived, while those two colonies , stolen and returned, have succumbed. Admittedly I did not go to any great lengths to aid them to expand (quarantined as far as I was concerned, as the idiot may have introduced any disease vector to them). The overwhelming wasp invasion occured while we were away and no other colonies in the apiary have been troubled. So my system works. Even when the wasps have devoured two colonies in the close vicinity.
As far as infringement of copyright is concerned, good. If it was someone who was making possibly hundreds of traps, to indiscriminately trap wasps, all the better in my view. As far as the wasp haters go, I don't sympathise; wasps have a place in the ecology and would do a better job than pesticide sprays, even if not as effective for several reasons.
I hope Karol keeps up his informative posts on how not to attract wasps to beekeepers' weak hives. Eventually the message may get through.