Hi-Yield® Root Killer (1.5 lbs)
Use to clear out sewer lines, septic tanks and drain fields. Will not harm trees, shrubs, sewer or drain pipes. Formulated to quickly and economically kill and dissolve fungus and roots from trees and shrubs.
Apply 1/3 of container crystals into a toilet bowl. Immediately flush the toilet repeatedly until all crystals have been flushed down. Repeat application every 3-4 months.