Yes, Gentrol Complete EC3 has a residue that continues working even after it has dried.
When spraying any chemical inside such as Gentrol Complete EC3, we always recommend wearing a respirator or N95 Valved Respirator Mask indoors due to the lack of ventilation. You can also view any other PPE on the product's label
Unfortunately Gentrol Complete EC3 is not labeled for fleas or mites. For fleas we do have products here.
DeltaGard G granules are specifically labeled to treat Bermudagrass mites. The usage rate is 2-3 lbs per 1,000 sq feet. Please see the label for complete application instructions.
If dealing with a different type of mite if would depend on the actual type for treatment.