Yes, the Attain TR Micro Total Release Insecticide can be used inside of your greenhouse still. It will cover up to 3000 square feet.
Attain TR is labeled for use in greenhouses only. That being said, it should not leave a messy residue behind and there is no clean-up required after application.
Attain TR Micro Total Release Insecticide is not labeled for Russet Mites.
Russet Mites are highly host specific and only feeds on cannabis and hemp plants which unfortunately, there aren't any products we carry currently labeled for cannibis use so we cannot conrfirm if they would be effective, safe or at what growing stage to apply.
Please refer to your local Dept of Agriculture or review this article from Washington State for pesticides they have studied for this use.