Is this just copper sulfate which can be bought pure for much less?

I think Robert has a good idea there.But, I checked on ebay and the Copper Sulfate Pentahydrate 99% was $10/pound, the same price as this product (now $20 for 2 pounds). So it works out the same cost wise.

compare to Roebic FRK-6 Foaming Root Killer, Which one is better? Thanks

I really don't know the answer. I've used the other Roebic root killer because we have a long standing problem with roots from a large tree fouling up our plumbing and causing back-ups in the sewage line to the street. I've used it for years and didn't even know about the FRK-6. My off-handed guess would be that the FRK-6 would be great to blast through a tangle of roots with and the K-77 I use is more of a preventive measure. I started using that after I'd spent $$$ having a "roto-rooter" guy ream out the sewer line for the umteenth time. I probably wouldn't hesitate to use the FRK-6 if I had another blockage in my line. I use the K-77 every six months and haven't had to resort to calling a plumber for several years since I started using it.

Has anyone had experience using this product on a slow moving drain WITHOUT having their drain augered?

I use that stuff every 3 months 1/3 of a bottle, now I augered my drain because mine had really backed up but I won't stop using this stuff, I haven't had to do anything else with the drain so I imagine it is killing all the roots from growing any further. It's definitely worth a try, I've got a friend within the family that does plumbing and he told me that is about the best on the market!

Is this safe to use in a Septic System without harming the septic mound which is about 200 feet from house?

I have used it twice in the past year and to my knowledge there has been no damage to my septic system. The product worked very well.

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🚿 Clear pipes, clear mind — stop roots before they start!

TRUSTED LEGACY - Over 50 years of proven performance from Roebic, the septic care experts
ROOT ANNIHILATOR - Kills invasive roots at pipe entry points to prevent costly backups
ECO SMART FORMULA - Non-corrosive and safe for surrounding trees, ground cover, and septic bacteria
LONG TERM DEFENSE - Dead roots seal entry points, stopping regrowth for lasting protection
UNIVERSAL PLUMBING ALLY - Compatible with all types of plumbing and septic systems (check local restrictions)

Roebic K-77 Root Killer is a 32-ounce copper-based solution designed to chemically eliminate roots invading sewer and septic pipes. Its fast-acting, non-corrosive formula kills roots at the entry point, sealing them off to prevent regrowth without harming surrounding vegetation or septic bacteria. Suitable for all plumbing types except in certain restricted states, Roebic K-77 offers over 50 years of trusted septic system expertise to keep your pipes flowing smoothly.

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Product Dimensions	11.43 x 19.05 x 5.72 cm; 4.54 g
Part number	K-77-2LB
Item display height	8 inches
Item display width	4 inches
Item display weight	1 Pounds
Material type	Copper
Ingredients	See package
Item volume	32 Fluid Ounces
Department	Unisex-Adult
Manufacturer	Roebic Store
Item model number	K-77-2LB
ASIN	B000BQWKUQ

RoebicK-77 Root Killer: Clears Pipes, Stops New Growth, Works for Sewer and Septic Systems - 32 Ounce

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