Professional services can help remove the odor and the cost of such would be taken out of your tenants security deposit. 

I was shocked when my carpet cleaner showed me the urine and feces damage to the property (he used a special light) and also he said once he started in to clean that level of damage the odor from the animals’ excretions would be released and become obvious throughout the house.

@Adam Martin: I haven't had a cat in 20 years (but I had many growing up), so I think I can detect the odor and I didn't.

That room does have carpet and even heavy steam cleaning does not permanently remove the odor. 

What should I do to get rid of the odor from the yard and in the home???

I immedediately evicted him, it took 3 months for the sheriff to lock him out and the dog odor was so bad I washed the walls, painted them removed the furnace and cleaned inside the wall, removed the light switches and receptacles, washed the tile floors with bleach (every floor was tile), waxes the floors and I could not get rid of the odor.

I also mentioned the odor and hiring a pro to clean carpet plus all the pet hair. 

The rented machines tend to cause more issues than they resolve and you have an objective third party to confirm the odor or other problems.In my market, a cleaner charges $30 an hour and they round to the nearest half hour. 2.5 hours of cleaning would be $75. 

@Theodore Ezzedine I am happy to connect and assist, feel free to message me! 

Quote from @Chris Geer: When someone smokes outside, the odor clings to them and they bring it indoors with them.