(6)-Pack, AC Line Drainline Buildup Remover Air Conditioner Condensate Pack of (6) 8 ounce Bottles Helps Prevent Clogs and Water Leaks in A/C Drain Lines Helps to Remove Slime Build-Up in Drain Lines Biodegradable & Non-Corrosive Use Every 3 to 6 months Replaces / Supersedes: NuLine , Nu Line , Nu-Line , NL1 , NL-1 , AC Line WACL8 , 021449976855 and Similar Drain Line Products.