Sodium Hydroxide, Sodium Hypochlorite, Sodium Silicate and Surfactants.
Pour 1/2 bottle of Drano slowly into drain. (For extremely slow-running drains or complete clogs, pour in entire bottle). Allow to work for 15 minutes for tough clogs). Flush with hot water. Repeat steps if necessary. Garbage Disposal Drains: Follow same directions. If drain has not cleared, do not turn on disposal since Drano may splash back. Consult plumber. Not for use in toilets. To prevent future clogs: After clearing clog with Drano, follow up with Drano Build-up Remover monthly.
S.C. Johnson & Son, Inc.
Racine, WI 53403-2236