I want to dig a shallow strip around my home, about a foot wide, and put down pea gravel in an effort to quell weeds and bugs. However, I'm concerned about how to do so, as my home sits on a small hill and has a basement, so it slopes down toward the back. I don't want water to cascade into the basement via the gravel strip. How should I do this? What should I line the dug-out area with before putting down the gravel and how can I keep water from draining into the basement? Thanks.