Maybe from manufacturing meth?

Most tenants don't know that, and what they'll do, though, is start manufacturing habitability problems so they can break a lease.  

I have already gotten them a welcome gift bag prior to them moving in- since they just had a baby, I got them a baby outfit, a large wall decal for the nursery, and baby cleaning supply..

It's rare in any market to see a rental with nothing installed in it.It's getter cheaper these days to always by package deals during major holiday sales.Many stores through in a dishwasher for dang near nothing when your buying a refrigerator and stove from the same manufacturers (Kenmore,Maytag,etc.).Add a Washer and Dryer to the mix and it can really be a money saving super bargain for the whole shibang.

It is sad, but having dealt with older people in the same situation, they will manufacture or amplify problems just to gain human interaction.

User error is likely not the landlords fault, or the manufacturer's fault."

Afraid, of getting my car towed at night, i went straight to the city parking department and bought a residential decal.

Reasonable cleaning costs would include the cost of such things as eliminating flea infestations left by the tenant's animals, cleaning the oven, removing decals from walls, removing mildew in bathrooms, defrosting the refrigerator, or washing the kitchen floor.

Of course, Auntie Mabel, there is absolutely no chance that this guy might decide to manufacture meth as his next venture, even though it's extremely lucrative and all he needs is a kitchen. 

In a KAIZEN for a manufacturing process for example, (sorry for nerding out here), a process/work flow is studied to determine areas of waste and in turn develop a procedure and/or work instruction for the job function in an effort to shorten lead times.