Formulated to quickly and economically kill and dissolve fungus and roots from trees and shrubs that have entered the sewer line, septic tank, and drain fields

Will not harm trees, shrubs, sewer, or drain pipes

Apply 1/3 of container crystals into toilet bowl flushing repeatedly until all crystals are gone

Repeat every 3 to 4 months

Formulation: Copper Sulfate

1-1/2 lb