Rinse the plant in water everyday. Spider mites or any bug will be gone. If it’s in a container use a gallon jug and flood it over the plants daily.
Outside use a water hose and rinse every 3 days, daily if you have good drainage. You can use a tote of water and wash your plants in it.
I don’t use anything on my plants. I’ll throw it away if water don’t fix it. I don’t want to raise pest and fungus issues.
I get pest damaged plants to fix all the time. The best stuff was tried on them. I get it to recover 100%
Water works and then the immunity kicks back in. 
