It wasn't overnight. The smell did just start one day. Then has gotten progressively worse. Route 66 was over a month ago. I don't know it is but had to have been bigger than just a mouse. For all the guey shit in there it had to be bigger. Unless it was just packing shit in there. Then it died mixed with all the shit he put in there? Thats what makes the most sense anyway. Still need to buy some PVC & step down to a smaller tube to really get all that crap out of there. I think my shop vac may just need recycled after

Then I'll need to spray some por15 or something in there. It's no wonder I couldn't find it. I can't believe how nasty that shit is. I can literally still smell it & I am an hour away from my house

Once you get all you can out of the long, you might pick up some Fabreze products. They work pretty well at eliminating smells, not just adding a perfume to cover up smells.

I think you just need to sell the car..........

I will start the bidding at $100 because I like you!

U have any pets? (cats or dogs?)

Wondering if something was storing stolen pet food there, it didn't stink until it got "wet" on your road trip to Rt 66

flush it with water hose...then some simple green , then think about removing the heater tube... people say you can smash and pull em through the two inner access openings..

I don't think you want any hint of that aroma left in there.

Be sure to save a sample in a jar.

Made a little attachment from my shop vac to make a smaller tube. With the smaller tube I was able to get in there better. Although a lot of it had already dissipated. Vacuumed out what was left. Sprayed a little cleaner in there & left it open to air out. Tomorrow I plan to jack up the front end. Run water from the front down through to hopefully get it completely flushed. Then get some heat in there to dry it out. After that I'll get some por 15 or something along those lines to make sure I kill any rust that may have started. It is already so much better smell wise. My trip to WCR should be without the horrible stench

They make a spray to coat the inside of tubes. You can also get about a 4 foot extension for the can. Check with your local paint shop. It is supposed to be "a spray on PoR" product.

have you looked in from the front of that tube behind the speaker?

That is nasty...

I think the varmint is living in the fresh air box and making the "long" trip down the tubes to the end and using that as the bathroom... So you have just uncovered the toilet not the bedroom.

Peanut butter sandwich, anyone?

DAPO

I did actually. I used a small camera on an adjustable end to see in the tube.I couldn't see it from that end

Are you using the heater tubes?

If not, I might suggest you use a drill bit, on an extension, possibly a custom rig that would totally shred that paper tube and shred it.
Then vacuum it out of there...

You could get a water jet fitting on a garden hose that aims backwards. Stuff it in the hole and turn on the water. Then slowly drag the hose out. It will clean it out...

POR15 is a rust encapsulator that needs proper surface preparation to adhere well. Probably shouldn't use that there.

Eastwood makes an undercoating gun with various spray heads that works well. Undercoating from the inside may help but you may be further ahead to carefully cut a window in the long and pull everything out.

And now we know what happened to Jimmy Hoffa....

So saturday I did this. Put a high pressure nossle on my hose. Fed it down the long from behind the passenger side speaker. Turned it on & let it run a bit. The slowly pulled it back out. It is much better. I no longer smell it in the car. I also fed some oil stuff my wife makes called Purify. It kills bacteria & has a nice smell to it. I can still smell a bit outside but could be from gunk that got sprayed back on the motor & engine bay. Shouldn't be to much there but I'll jack it up & spray the area out good. I drove it to work today & just being out in the open air. I think I have it basically gone. So my trip to WCR should be a pleasant stench free ride

That is great news - enjoy the ride to the event!