If their indoors then you got a problem. Their almost impossible to eradicate indoors especially if they've got a good colony rolling and you didn't catch them early. Them fuckers will be in your carpet, your curtains, house plants, you name it. If you buy clones from an outside source always spray them down before you bring them in your house, people love to pass mite filled plants around because apparently if they got em then they want you to have them too. I've been fortunate and never gotten infected. Bad thing is once you think you finally got rid of them in your garden indoors, all the sudden their back. But to your question, if it's proper flowering time outside then put them outside but make sure you put them out outside in sequence of sleep time with sunset, don't want to disrupt that to much if you can help it, and let predators go to work, other option start spraying but your gonna have to spray the buds because they lay eggs everywhere, mainly on the underside of your leaves, fan leaves and sugar, and you don't want to smoke mites.