i wanted to run a intake fan in my grow room to bring in fresh air in from out side, what should i use to make sure i don't bring in bugs? it will be on the out side of my house so cant look suspicious. last time i got spider mites and i want to try to avoid them from now on...lol. ive been told pantyhose work but was looking for other ideas?
speaker covering works if its fine enough. If they're a problem you should look into beneficial insects. Such as ladybugs, spiders.