Ladybugs are good with thrips - not mites.
https://hydro-gardens.com/product-category/beneficials/spidermites/
In Colorado Springs.
The younger lady is nice. The older lady, wife of the owner I think, is pretty tough but knows her sh*t. She told me, "Ladybugs would rather starve than eat spider mites."
Your friend Yoda knows the place.
https://hydro-gardens.com/product/lacewing-eggs-1000-5p335a/
https://hydro-gardens.com/product/lacewing-eggs-5000-5p335/
https://hydro-gardens.com/product/lacewing-eggs-on-cards-5000-5p335c/
One of the posters here said he used Green Lace Wings. It takes about 4 days for them to hatch and become larvae. The larvae are the eaters and are
relentless. When they run out of food they eat each other. The lady there may push predator mites but you have a narrow heat and humidity range for them. Predator mites take a while to work too.
Our friend here with the Al Bundy avatar swears by Capt jack's Dead Bug Brew (concentrate) which is Spinosad.
He gave me a tip of getting Fels Naptha soap ($1.19 at Wal Mart or King Soupers or whereever on the detergent aisle).
He said Fels Naptha with Spinosad or the two of them separate for spider mites.
You will need to get a $1 cheese grater at Dollar Tree and two 1 quart plastic jugs at Dollar Tree for $1.
http://www.hansenfamilyfarm.com/blog/make-your-own-non-toxic-insecticidal-spray-soap
Works on Spider mites - not sure about russets.
https://bloomtender.wordpress.com/2013/02/17/fels-naptha-insecticidal-soap/5 hours then spray with water
Our friend 2727 Al Bundy guy says Spinosad and Fels Naptha - separate or together can kill spider mites in Flower. You might want to spray with fans off, let it sit for 1 hour then turn on fans. Let it sit for 5 hours then spray with water with fans off then fans on.