honestly the only way that i've found to get rid of the mites is to stop growing for six to eight months. During that time.... CLEAN CLEAN CLEAN w/ bleach and keep all and any plants out of the house. I know that is something most people wont do for just a small spidermite problem but once it gets too out of control. its a must. The eggs live upto six months after you stop growing and come back when conditions are just right. other then that i've never found anything that really works.