While a lot of these types of products can be employed lawfully within unlined ducts if all label Instructions are followed, a few of the Instructions around the label may be inappropriate to be used in ducts. For example, if the Instructions suggest "rinse with drinking water", the extra humidity https://home-air-ducts-cleaned76419.blogunteer.com/31962242/the-smart-trick-of-duct-cleaning-that-nobody-is-discussing