Caring for your Invisalign aligners is simple and only adds one more step to your daily oral hygiene routine. Once you brush your teeth and floss, just take your toothbrush along with some warm water and brush your aligners before putting them back in. This gets rid of any harmful bacteria that may be clinging to the aligners from the day. You don’t want to put dirty aligners on freshly cleaned teeth, so this is a step you don’t want to skip.