Gel Tabs are formulated with a breakthrough gel locking technology for treating air conditioning pans and lines. They will keep the pan from clogging and eliminate foul and musty odors.Gel Tabs are easy to use... put them into the pan and forget about them. When activated by condensation, the tablet will turn to gel and lock into place. This ensures that the tab will not move and potentially block the . Gel Tabs are designed to completely dissolve at an even rate over a 3 month period leaving nothing to remove when the product is done working.Directions for Use: 1 Tablet per 3 Tons , to be placed in pan every 3 monthsNote : Images are for illustration only. Actual item may vary.