Skip to Content

Foaming Root Killer vs Copper Sulfate [Everything You Need to Know]

Roots are causing trouble inside your pipeline? Unable to choose the right root killer to clean your pipeline? You might be stuck between foaming root killer and copper sulfate.

We understand how perplexing it could be, don’t worry!

Which is better: foaming root killer vs copper sulfate?

Both of them are perfect for clearing roots. Foaming Root Killer is a modern product that contains dichlobenil. But, Copper Sulfate is an outdated product that contains Copper and Sulfur. Foaming Root Killer can be a bit more expensive than Copper Sulfate but it works fast and it’s safe for the pipes.

We have put up a detailed comparison between them, why not read the article and see best for yourself.

Enjoy reading the details!

Foaming Root Killer vs Copper Sulfate: Head to Head Comparison

Before you jump into the details, you must gather some knowledge on their differences. Knowing the basic differences will help you grasp the idea better.

Foaming Root KillerCopper Sulfate
Works FastTakes Time to work
Safe for the pipesHarmful for the pipes
Modern ProductOutdated Product

Foaming Root Killer vs Copper Sulfate: Detailed Comparison

Foaming root killer and copper sulfate, both works finely for clearing sewer lines. But it gets pretty confusing when you are about to choose between them. 

Foaming Root Killer is a foam-based solution that kills roots. And, prevents them from growing back. Copper sulfate is used to kill bothersome roots and restore normal system function.

Let’s take a closer look at their distinctions for a deeper comprehension!


Generally, a Root killer is a chemical that is used in pipelines to kill roots. Dichlobenil is contained in it which also keeps the pipeline free. The best part is that you can also make your own root killers.

The chemical ‘Dichlobenil’ assists the roots to break down faster. When it comes into touch with water, it self-foams and settles at the top of the pipe. This enables you to swiftly resolve root issues.

Copper sulfate on the other hand is an outdated chemical product though.  It contains copper and sulfur.

If the copper is more strong, the copper sulfate will be more lethal.Copper sulfate is primarily composed of copper. It can be found in liquid, dust, or crystal form in some items. It’s more solid and sinks to the bottom.

How They Work

When foaming root killer is used, the shafts are not harmed if used correctly. To prevent root penetration in the piping system, foam root killers can be utilized. It takes 2 days to 1 week to clean the line with a foam root killer. 

In order for Foamy Root Killer to function correctly, the system must have a specific thread. Because it won’t be able to kill them if it can’t reach the roots. 

Surface root growth should be avoided along sidewalks and side roadways. Try doing this every year for a year. 

In the case of copper sulfate, the natural bacteria in the sewer system or pit are unaffected. It can remove all the roots from the pipeline if that’s your aim.

If your system isn’t flowing, you’ll need to clean it mechanically first. After the cleaning, apply the copper sulfate. The reason for this is that it can’t reach the roots. It’ll not be able to destroy them. 

Copper sulfate should be used for 2 to 4 weeks to clear the root system. The length of time necessary is dictated by the gravity of the underlying issue. Wait 3-4 weeks before employing copper sulfate to root the system.

But If the roots infiltrate the main drain line or the reservoir itself, then you’ll need a foam killer.  And there are times you might deal with the toilet tank not filling up.


Foaming root killer is far more effective than copper sulfate. Work begins in just two days and the process is really fast. Thus, you’ll see a considerable improvement within a week. But if there are sands in the pipes then you might have to look for other solutions.

Copper Sulfate is effective for clearing the root system but it’s harmful to the pipes. It also takes quite a lot of time to work. 


When it comes to root killers, cost is unquestionably crucial. No one would like to waste money on expensive root killers if cheaper ones are equally effective. 

Foaming root killer is costlier than copper sulfate. Foaming root killers costs range from $19-$23. It can be more or less depending on the brand. Copper sulfate costs around $18. 

Final Verdict

Still confused as to what to use for cleaning your sewer pipes? Well, let us shed some light on this to clear your mind!

By now you’ve already realized that we are recommending the foaming root killer. Even though it is expensive, it takes less time to work and is less harmful. Unlike foaming root killers, copper sulfate is cheap. Unfortunately, it will take a long time and may cause damage to the pipes. 

If you don’t want your pipes to be damaged and clear the pipes faster, foaming the root killer is better.

How To Use Root Killers?

It’s not like you can just put the root killers on the sewer lines and expect it to work. There are ways of using root killers As a result, you must carefully follow the directions. Don’t fret, we’ve provided the proper instructions on using both copper sulfate and foaming root killer.

Copper Sulfate

First fill your toilet with sodium chloride, copper sulfate, or rock salt. Then fill it with half a pound of salt. To wipe out the bowl, flush as many times as necessary. Continue until you’ve flushed two pounds of salt through your pipes.

Foaming Root Killer

Fill the toilet bowl with the foaming root killer. Flush the toilet to have the foaming root killer into the sewer system. Please refrain from using the toilet until the clog has been removed. 

In case you have the toilet clogged, then you might have to unclog the toilet first.

Trim around a 3-inch-deep edge which would prevent roots from damaging driveways. Fill the thin edge you cut with the foaming root killer. Reapply the foaming root killer once a year to kill new root development.

By the way, here are our suggestions for the best root killers-

Product 1
Product 2

These are pretty effective and will definitely keep your sewer pipes clean.

That was all about root killer vs copper sulfate. We tried to explain all the things you should know regarding these. Now you can pick your choice of root killer and get to work!


Question: How do I make use of root x root foaming wine?

Answer: RootX can be dumped into a sewer pipe and junction box right away. It can eliminate roots that have become trapped in containers and sewers. It is prohibited in Florida and its septic system.

Question: Why is the foam used as a line instead of copper sulfate?

Answer: The foaming treatment is non-systemic. It will only kill the roots and leave the trees unharmed. The treatment is used by many cities for their trunk lines. It has been successful for about 40 years. A single spray kills roots and restricts regrowth for years.

Question: Is copper sulfate harmful to the pipes?

Answer: Copper sulfate corrodes metals like iron, brass, and chrome. As a result, keep a distance from them. It  should only be used twice a year. The more you use the crystals, the more probable it is that the pipes will be damaged. Copper sulfate is a poisonous and hazardous chemical.


Now you know who wins the battle in Foaming Root Killer vs Copper Sulfate. We hope you found our guide useful. You must now be able to make your decision.

But do remember, whichever you choose, follow our instructions correctly to get the best results.  

See you next time!