: These formulas expand to fill the entire diameter of the pipe, coating top-surface root intrusions that liquid chemicals wash past.

: This compound creates a toxic zone inside the pipe that kills invading roots without killing the tree itself.

: Never pour kitchen grease down outside gullies; it will solidify and cause "fatbergs."

: Highly effective against fat and grease, but requires extreme caution and protective gear.

: Steel augers physically break through stubborn leaf nests and small root bundles deep inside the line.

: Run a hydro-jetter or drain auger down the line until you meet the solid resistance of the clog.

(if the blockage is in a shared or public sewer) How to Unblock Drains Outside (Expert Guide) - Jeyes Fluid