Please help ! What to use to kill spidermites if your using a sulfur burner?

Hi all,
My friend has a somewhat large vertical hydroponic grow room. His biggest problem with this type of grow is powder mildew, so he has to use a sulfur burner. Once that is solve his second biggest problem are those damm spidermites !

What effective method can he use to kill the spiders that will not react with the sulfur on the leaves. Seems that all products for spider mites ( that do work ! ) have an oil in it which is no good cause it reacts with the sulfur and burns the leaves.

I read that some guys in this forum use 10,000ppm of co2 for like an hour. He 's a little afraid of that since everyone he's talked to in the different hydro store strongly suggest him not to do that

Any other Ideas ???????

Thanks

I know the good stuff like Azamax, sns-217, neem oil are out like soo many others

FORBID or FLORAMITE, with Forbid being my favorite of the 2. Neither are oil based and one application does the trick.

Search ebay for either, in affordable amounts. In the real world, you need a license to buy the stuff and it is stupid expensive. But, a ~$20 bottle of Forbid has lasted me over a year and I still have more than 1/2 left.

Wet