This is the first I've heard of it. We are letting the bees take care of any wayward ants that venture their way. And if necessary, I'll put the legs into buckets with oil as many suggested.
I've not heard of it either, but am willing to try it if I can find some. We have a constant battle with ants here. Oil works, but you lose a few bees to it. I've also greased the stand legs with petroleum jelly, which also works but it melts off when it gets hot.
The New Mexico Beekeepers Association is a non-profit organization of private beekeepers, commercial beekeepers, persons interested in promoting the importance of the honey bee in the environment, and businesses related to the honey industry. Representing all regions of New Mexico, the Association maintains a close affiliation with the State of New Mexico's Department of Agriculture. Membership in the Association is open to all interested persons.