An ozone machine has been helpful for us in the past, but its effectiveness depends on the severity of the odor.

My question is, is there anything more I need to do to (i.e. issue a formal written notice of lease violation) in order to prepare for the possibility of keeping a portion of their security deposit to pay for eliminating the odor? 

We suspect the odor might be cat urine as the owner lets a stray cat into his home.

Abating the odor (tobacco and Marijuana) is costly and time consuming. 

Quote from @Theodore Welpott: Does anyone have a contractor in the Rochester Hills, MI area they have worked with and would recommend for a whole house re-do, house is very dated with good bones.

After that, you won't have anymore problems with the odors and mold and dirt and bugs and stuff that love to hide out in the padding.

We didn't have to go so far as to use ozone, as once the above was done, the odor had disappeared nearly entirely.Best of luck with it!

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

hi so my tenant filed complaint about the place is unhealthy and now I got a letter from the health department saying I gotta correct the following list. so first complaint is smelly odor from fridge, they told me to fix the odor but my question is isnt it the tenant responsible for their fridge and not me?

The expansion is headed out to more rural areas.Grand Bay and Theodore are smaller rural areas outside of Mobile off the i10 Interstate.