I found traps containing this substance on the rental side but I do not have a toxicity report from a vet (I was too distraught to ask for one).I removed the toxic traps, I do not trust my renter,  and I am uncomfortable living with a person who violated my request.

For example "No cooking grease, oil, animal meat bones, pasta, rice, any other substance down the garbage disposals except apple and carrot peels and liquids with no solid matter such as juice and soda" and "no vaping and smoking of any tobacco product, marijuana or any substance" on the property, including the backyard"  

That does not happen by accident, you must spec what you want.The wire shelves allow for easier painting on turns, (easy quick) visual conformation that the outgoing renter has not left (a handgun, illegal substances, or a big dead bug) up there.I am not aware of these ubiquitous shelves being a danger to life...Seems like the tail wants to wag the dog here--maybe a harbinger of things to come.Either the renter or you are the boss...maybe a harbinger of things to come.Good Luck!

@Srikanth DurbhakulaIf you are looking for experts to provide you a feedback you need to share much more substance including location, cost of rehab, cap rate before and after, full underwriting analysis, whether you're buying it yourself or with investors, loan terms, whether you're getting a construction loan as well, your strategy for this property, etc...

Consider this statement: Your life is made up of time.Time is the substance of life.

So as to ad some substance to this forum I want to ask about Nextfoor.com, typically the people who join it are new/younger owners in the area.

I really enjoy the shows because they have more substance and realistic expectations than some others that I have heard.

The jobs were basic warehouse jobs and did not pay a lot but the Vets coming to us were all recovering from substance abuse, many had been homeless and or had been in jail.  

I've seen some videos on youtube where someone recommend a tar like substance to fill those holes and prevent moisture getting in.

Image over substance.