this garlic, sounds interesting, I bet it also keeps people away ;-). Seriously, I can't tolerate large amounts so I doubt that whatever I can eat would be effective.
However, I've never tried to remove saliva out of cow's mouth, but I have a cow pasture nearby and I may try, maybe next time we go cow-tipping ;-)
I've seen several CO2-based traps on the market, I thought they were based on a catalytic reaction as opposed to flame-burning propane.
I always have propane tanks with me when camping, and tubing, regulator and metering valves would be no problem.
But, I am not able to find any small catalyst that would oxidize HC to CO2 + H2O, just like a car's CAT, and heat up in the process to around 100F.
If I had one, then putting it inside the zapper is easy, and the rest is taken care of by about 1000V on the zapper's grid.
Has anyone ever seen a small CAT like that?
It would need to oxidize HC fed to it at room temperature, as opposed to car's exhaust that's already pre-heated, (so, maybe such a CAT does not exist).
So, the next best solution maybe to put a very small burner inside the zapper.