There are a lot of things you can use.
SNS 209 is essentially rosemary oil and the rosemeric oil gets in the plants after about 5 waterings or 2.5 days or so. The mites hate it. They starve or leave.
Some dudes have said that rosemary can leave a taste in the smoke.
One guy here uses Safer 3 in 1 and adds about 1 oz of rubbing alcohol (50,70 or 90% sold at drug store).
You can spray 55% water and 45% rubbing alcohol. Maybe add a drop of Dawn.
The other Safer soap or sprays with Sulphur. Supposedly Sulphur melts them.
Bug bombs - Dr. Doom or something, Pyrethin and Beethoven. Be careful if it is in your house - leave and take any pets too.
Neem oil (100%) with a little Dawn a few drops.
I have used Canola oil 3 tablespoons with a teaspoon of Dawn in a one gallon sprayer. Let sit for 5 hours and rinse with water later. This is about as cheap as it gets. A well known or two mite spray uses...canola oil.
Always spray with lights off.
Some people say add Silica Blast to your waterings because it toughens up the plants.
Google CaliClean (hmebnera or hambenero) aka Pepper Spray. Cheap and effective and old California grower trick. Strong stuff but cheap. Safe on plants but strong to breathe in.
Yellow sticky paper. Aphids and mites supposedly love bright yellow along with other bugs.