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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🚿 Keep your pipes root-free and flowing like a pro!

ROOT STOPPER POWER - Kills invasive roots fast to keep pipes flowing smoothly
COST SAVING SOLUTION - Avoid expensive digging and rooter services with proactive root control
ECO SMART PROTECTION - Safe for septic tanks, trees, and beneficial bacteria—no collateral damage
MAINTENANCE MADE EASY - Apply biannually for lasting clog prevention and peace of mind
COPPER INFUSED FORMULA - Targets roots at the source without harming your plumbing

Roebic Laboratories K-77 Root Killer is a 32oz copper-based treatment designed to clear and prevent root intrusion in sewer and septic pipes. Non-corrosive and safe for all plumbing systems, it kills roots at pipe entry points, improving drainage and preventing costly clogs. Ideal for biannual maintenance, it protects your pipes without harming trees or septic bacteria, saving you from expensive repairs and backups.

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Manufacturer	Roebic Laboratories, Inc.
Part number	K-77-2LB
Item Weight	4.54 g
Product Dimensions	11.43 x 19.05 x 5.72 cm; 4.54 g
Item model number	K-77-2LB
Size	946.35 ml (Pack of 1)
Item Package Quantity	1
Number of handles	1
Coverage	Broad-spectrum coverage (weeds and moss)
Batteries included?	No
Batteries Required?	No

Roebic Laboratories K-77 Root Killer, 32OZ

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