Spider mites

I recently found out I had mites in my grow tent. I've sprayed my girls with 3 rounds of Trifecta after totally cleaning my tent with bleach and water. Still I'm noticing more mites.

What can i do, just keep spraying or what?

For Infestations – Dilute 2 oz. of Trifecta for every gallon of water. Apply every other day, up to 3 times per week, until infestation is controlled. Make applications at the end of a light cycle or just before dusk to prevent foliar damage. Stronger dilution rates may be necessary to treat severe infestations; however, do not use at rates higher than 4 oz. per gallon of water.