I have an underground cellar I’ve been converting to a grow room, and I’ll be dropping seeds in about a week.
I saw some bugs, including spiders down there, so I was wondering if I could just drop a bug bomb (fogger) to kill them all before I introduce the plants.
Or would the residue of the bug bomb harm the plants/their environment?
Maybe if you was a month out I might consider that 
We use a lot of hanging and floor glue traps here 
I wouldn’t worry too much about the spiders in fact you kind of want them they eat all the things you don’t want like aphides and spider mites if you dont see anything you know is specifically harmful to cannabis plants or plants in general I wouldn’t worry too much about it
Personally, I would go for it a week is plenty of time to air out Good maybe use a fan.
Im with @Smokesdaily
I leave my spiders 
Heres a little guy that pops out from around the grow bags once in a while. We have some HUGE fishing spiders living around the tent as well lol.
The Fishers are damn cool 
Id rather fight ten dudes than have a spider on me 
but the fishers ARE 
This guy was on the tree right out front of the house and ive come across larger in the basement 
About a 4" wingspan on this guy 
I’ll take you guys advice and just leave it alone since spiders shouldn’t cause harm and only saw one.
I’m just scared shitless of spiders so I guess my brain just assumed they’d harm plants 
A 4inch long spider would turn me into a scared little girl!
