My laundry drains to a grey-water field and I've had no problems with it for several years. Doing a kitchen remodel now and need to wash my dishes in the laundry room sink. Now my washing machine (which shares a line with the sink) overflows every time. I have had it snaked, vented, throw enzymes down it, all with no response. I don't want to have to destroy my yard to dig up the grey-water perforated pipe. HELP!:)

If you saked the pipe all the way to the field then the field is the problem. US polumbing codes do not allow use to run any drain straight to a field without going into a septic tank first. How old is the field?