Iv tried a few different products. And they all cost $. I have a veryyy cheap way to get rid of spider mites. Mix 50% rubbing alcohol 2/3 in spray bottle mixes with 1/3 water. Pure ro if possible. And a 2 small drips of dawn dishsoap. Non sentened. Like 1 ml per half gallon. And spray undersides of infested plants and light top coat ontop plant. Repeat every 3 days for a week. This is like a 5$ fix. And u steriliz ur room at same time.