Yes, I make them. Started out here on BYC back around 2011. Overran with rats, killing chicks, massive feed bill. Made a wooden treadle feeder that solved a lot of the problems with the Chinese made Grandpa feeder that I couldn't afford. LOL People started asking about selling them and the rest is history. The htttp site redirect to the Https site, just too lazy to change the link.I've been curious about the links in your signature but I'm not going to a http site..... what is it? Are you a stakeholder in this product ? I've read Howard E.'s rodent control white paper which is really good and I'm rat free due to Elimination (my choice: poison,) sanitation (my choice galvanized storage.) Exclusion - My barn is built like a home with cement, hardware cloth in insulated walls, metal roofing. Control: feral cats, dogs, daily clean up and feed storage..... All of this said and done I'm always on the lookout for a rat turd or evidence of them. I have rat ptsd, lol.
http ://ratproofchickenfeeder or http ://ratproofchickenfeeder
Glad you found Howard E.'s posts. That man did the best research I've ever seen on controlling rodents.
Sounds like you are very proactive with all three methods of rodent control. Love seeing responsible flock owners.