[quote=walterwhite]Dammit this thing might close I’m running out of time to run. I’m still concerned about a septic tank that hasn’t been pumped for 17 years. Is this a ticking time bomb of poo?[/quote]

Hopefully, your contingency period has not expired and you have a contingency to approve your physical inspection. Get a professional out there to look at it and tell you how much it will cost to get it up to snuff. If you have to dig it out and get a new tank, it could cost a LOT.