Is there anyway to find out the layout of the plumbing under my basement?

Having some plumbing issues of backup in the drain in the floor when using the washer. Had this issue before but from the kitchen sink is what made it overflow before (plumber for that time). I have a 25 foot snake and tried that and still some overflow. What to do now? I am trying to figure where all the pipes exactly go under the house before the street. Any suggestions would be great. Of course I am trying to save money. Oh and any thoughts of those pressure tools for $30 or so at the DIY stores? Thanks