In my neighborhood, the garage drains drain into a dry well, or so I have been told. Trouble is, we can't find ours and the drain won't drain. We have dug around the foundation some, but we cannot find it. We can shove a roto-rooter doohicky in around a bend in the drain, and get some tree roots, but it still doesn't drain. We got the professional roto rooter folks out, also, with no better results. WE just need to get the dry well working again. The neighbors do not remember where there's were located. They all had this done, but there's were done many years ago and they have forgotten where the thing was located. Any advice?