Eating and drinking along with brushing your teeth are the only times that Invisalign trays should be removed while in treatment. While drinking water with your Invisalign trays in is ok, drinking any colored liquids will stain the trays. Eating is also discouraged while your trays are being worn as the food will stick to the trays and dislodge them, potentially leading to breakage. We do recommend keeping your trays in your Invisalign case when you have them out to eat to make sure they are now misplaced!