The CO2 method is like folklore,it doesnt work.And,about the no pest strips being bad for humans,yeah,if you snort em,lol.Unless your in a room with no ventilation and about 20 no pest strips in there with ya while you sleep in the room,theres no adverse effects to humans,or plants.People are gonna use what they have found to be best.But for me with over 20+ years growing indoors,i swear by them if used right(even though the only time i got mites was from clones from a friend that i didnt quarentine/sp?/ first).What i hate even more than using the No Pest Strips,would be smoking dead mite bodys and there poop in my finnished product.If you have a bad mite problem,you can either try the strips for a bit,then use Schultz 3 in 1 spray for mold,mildew and mites,or trash yer room and start over after a good cleaning top to bottom.Even with the strips,i suggest you clean from top 2 bottom before starting the next round.For me,they have worked great,and besides my last three children being born 6 feet tall,with purple hair,there was no signs of anything that wasnt normal going on.I have found it hard to get sunglasses with only one lens though.Good luck killing the Aliens people...