Quote Originally Posted by lampost
Could you explain the methodology of how this is dangerous?

I've read studies that show that plants don't "take up" dichlorvos. So if you use it before buds form how is it going to contaminate the plant?

These are also used in large food storage warehouses. Keep reading!
OK, how about this: ATSDR - Public Health Statement: Dichlorvos

My personal experience with dichlorvos involved shipping beneficial insects. For a period of time every shipment of predator mites died enroute, and it took awhile to locate the cause. Turns out a roll of paper towels had been stored near a "no pest" strip, and one paper towel wrapped around predator mites sealed in lengths of soda straws with corks on the ends was enough to kill the predator mites during shipment - I don't know how the vapors got inside the straw, but they did. Using a new roll of paper towels solved the problem.

Anything that toxic is something I want to stay away from. According to the link I provided above, dichlorvos is harmful to humans in sufficient doses (even lethal), and is a common contaminate in toxic waste dumps as well. Just working around the vapors is harmful when the levels are high enough (and what is it doing at lower levels?). Is this something you really want to experiment with your health over? In addition to the hazards of breathing the vapors, dichlorvos can also be absorbed through the skin, or eaten. Each method is harmful. I still can't recommend it, and again, "no pest" strips aren't approved for use with plants for consumption, either.

Using CO2 for killing mites is an intriguing idea, but I haven't tried it personally.