How do you Use rock salt to kill tree roots in mainline drain?

Answer 1

i'd like to know too. my dad said old timers put rock salt in toilet tank, so water is salty and slowly kills roots in sewer pipes.

don't know if salt damages pipes though.

Salt in toilet works (in the toilet) because it avoids metal piping (traps & such) in sinks & tubs (which salt Will corrode). It is a most direct way to main drain, which today are clay pipe or PVC. My experience is that roots only grow into old Clay pipe fittings & joints. I've replaced a 'few' with PVC & had no further trouble. If you can afford the major expense.

But don't forget to irradicate the Source, as best you can.

Answer 2

To use rock salt to kill tree roots in a mainline drain, you can pour a large amount of rock salt directly down the drain. The salt will create a high-salinity environment that can kill the roots when they come into contact with it. It's important to note that this method may take some time to be effective and may require multiple applications. Additionally, it's advisable to consult with a professional plumber before attempting this method to ensure it's safe for your specific situation.

Answer 3

Yes it will kill the roots, but it will also kill the soil around the roots. This is not a good way to kill tree roots.