I have an odor in an interior wall. I had holes cut (2) between 2 sets of studs. But nothing found. The odor smells like a dead animal (especially when it gets hot).
What can I do to eliminate the smell? Are there chemicals that can be injected in the wall spaces?

Actually your best bet would be to get it out of there as far as i know about the only thing you could use is alot of lysol constently.More than likly at some point there were mice in the house and they eat poison thats why i always suggest using mouse traps more of a hassel but they cant run of and die every were.