COPPER SULFATE has been the preferred root killer by plumbers and contractors for use on sewer lines and septic lines for decades. We sell pure Copper Sulfate Crystals EPA bag as the preferred Tree Root Killer.
A. For partial stoppage: Add 1/2 pound of Copper Sulfate to sewer or drain and flush (Place the copper sulfate in the toilet where applicable and flush to carry the treatment to the intruded area.) Repeat at 6-month intervals to prevent growth of new roots.
For complete stoppage: Physically remove the root blockage and repeat as above.
State law prohibits the use of copper sulfate in sewage systems in the State of Connecticut and in the following counties of California:
Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano and Sonoma.
The 50 pound Copper Sulfate CRYSTALS-EPA Label, and Fine EPA Label that we sell have an EPA approved number on the bag. There are full instructions on the bag to do all that our site talks about.
The 50 pound bag of Copper Sulfate Fine-Feed Grade, the 10 pound bags of Copper Sulfate Fine-Feed Grade and Crystals Ag Grade and the 200 gram bottle do NOT have the EPA label on them and therefore have NO CLAIMS for Algae Control, Killing Roots, Fungicide, or Bordeaux Mix. If you are purchasing a 10 or 50 pound bag of Copper Sulfate Feed Grade or Ag Grade, it is just simply labeled "Copper Sulfate - Feed Grade" or "Copper Sulfate - Ag Grade" and is to be used for the dozens of other non-EPA uses for Copper Sulfate listed under our "Other Uses" page.
When placing an order, the purchaser acknowledges they have taken full responsibility to check and follow local, state and federal regulations regarding application of copper sulfate. Also, the purchaser assumes responsibility to follow proper handling and safety requirements for the product. The seller is not to be held accountable for any incidents of bodily or environmental harm due to improper handling.