Yes, all the time. This fact is a very big reason I am going the homegrown route. I want to know what's in my grass.you ever wonder what they spray on the pot your smoking to keep bugs off?
I've heard the stories of formaldehyde. Don't know if its true, but seeing my grow from start to finish is very important to me. Not to mention I won't be supporting illegal drug trade. Won't have to travel dirty either. The list goes on for benefits.