Cleaning Out Your AC Condensation Drain Line
I have multiple rentals and have found that a shop vac at the end of the condensate line will invariably suck out the problem. After that pour about a cup of white vinegar into the front end of the line.
Cardboard Sheets for Shipping?
Visit your local Burger King. They get their buns (at least here in Florida) in large boxes that have flats separating the layers of buns. These are right at 18x24 and are clean.