We deal with hundreds of calls everyday and most of the calls are for sewer clogs. There are many chemicals available that kill roots, but even for the chemical to work efficiently, it needs to applied properly.
Remember the chemicals will not and do not unclog the sewer in case of a backup. Chemicals are used to rid the pipe of roots as a preemptive measure. Take a look at this video from askthebuilder.com. Tim Carter shows one of the ways to get rid of the roots and it seems cost effective for a home owner.
Another option is RootX. RootX is a very effective chemical that really works.
The following picture shows RootX in action

If you have any qestions or need help in deciding what chemical to use feel free to email us at anysewer@pay4995.com
(888)PAY4995
www.a4995.com

