The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.”Theodore Roosevelt

You may even need to hire someone to clean out the furnace and duct work to see if there are dead mice or other odor-causing problems.If they removed five dead mice, odds are there are more down there or the odor is in the dirt/wood.

Ran the machine for 12 hours, aired it out, went back in and the odor was even worse!

however, due to strong odor, my tenants have temporarily found a hotel room to stay until the odor comes down. 

The odor can be stuck behind trim or in the subflooring.

They claim the odor was not present before signing the contract.

I have a home that was infested with cats. The second you walk in, the smell punches you in the face. The floor has been stripped down to sub-floor and the sub-floor must still be holding odor along with walls, ceili...

The odor does carry into other apartments and into the common areas.

They claim the odor to smell like urine and although it's unpleasant, it isn't an emergency to me so do I stand my ground and not get back to them until Monday?

But I had one house where the odors were so bad (pets, not smokers) that I eventually had to have a drywall company re-texture all the drywall, then primer and paint.....