No I keep them in there 24/7 from start of flower til chop.
They make your nose twitch, you’ll see what I mean.
Shutting down ventilation for 45 minutes wont hurt shit, it smells like your farts @Seamonkey84 …lol
@Nagel420 if you put one of these in you could give us an actual scientific reading instead of my usual seems to work and its what I was shown type response, some frikkin science.