Like I said, my zapper has caused me no issues that I can see. As for terps, hell I dont know, my weed looks like weed, smells like weed and gets me stoned like weed. I'm satisfied, and that's what matters. There's always someone who thinks your doing it wrong, or their doing it better. But lifes to short to worry about what others think. Besides i'm in my 60's and time aint on my side, i'm doing what I want, and I suggest the same to everyone. Ya gotta do what makes you feel good.Definitely makes me wonder I have thought about a bug zapper but got little leery of them cause never heard of anyone using them in tents.. I use one of those cheap Katchy devices just outside the tents.. I always have Gnats I cant get rid of thsoe damn thing.. I need to go nuclear for most the summer with BTI and spinosad