Thanks for all the advice. I decided not to use the root killer but drain
the water into a pit. I have placed a weed blocker fabric with a lot of
rocks and I intend to monitor the growth of root into the pit. If that does
not work, I intend to redirect the water away from the tree by laying out a
pipe on the surface.

wrote:

On Jul 2, 7:57 am, R Kannan wrote:
Hi,

I have a large tree in the wetlands behind my house where my sump pump
water gets drained to, Roots from the tree get in and clog the pipe and
it is an annual ritual to clear it using powered snake. I saw a root
killer in home depot which is not safe for sump pump parts and so needs
to be applied where the the waters gets drained. Is that a good solution?
How effective is it? Is there a root killer which is safe for the sump
pump and so can be applied into the sump.

Any advice is appreciated,

TIA

PLEASE try to find a non-chemical solution to your problem. Putting a
little root killer in one spot might not seem like a problem, but with
a few hundred million people doing it, the wetlands you are privileged
to enjoy are getting destroyed. The chemicals kill stuff; that's why
you are considering them. But they will also kill other stuff, and
hang around for a long time.