Make some calls - you will find an agent willing to spray offers for you until one bites.A-Frames - Lending policy is the same for an A-Frame but the appraisal will need at least 1 like comp within 6 months that supports your value - that’s were you may run into some issues.

I have had water meters ripped out of walls, copper pipes stolen, spray painted smiley faces on walls.

I have observed many companies at larger complexes claim they sprayed x amount of units and they get back within 15 mins.

We have sent pest control 4 times already and they now request a spraying every 2 weeks.

If I depend on the tenants, all three would have to get on it, often each with their own DIY solution, ranging from doing nothing, to get their own sprays, traps, and often ineffective, resulting in more calls. 

You accepted condition of building / unit when you took over..Wear and tear on carpet this age is ridiculous,, it's has no appreciable life left.You could charge him if he broke a window since your ownership, or that type of damage,, but anything nicotine damaged from your point of ownership is pointless in trying to recover any damages from this tenant.Any why you would have DEEP CLEANED a carpet that was in this type of unit was a waste of your money.You will not get rid of the smoke smell until you wall wash with TSP all walls, woodwork, windows, then prime coat walls with KILZ,, clean all filters, any vents spray inside after washing out as best possible with spray kilz,, don't try to save any window treatments. 

Even with the inspections it amazed me how many properties I have looked at that seemed to be made entirely out of spray foam & duct tape.

That said, the spray can, the aerosol spray can, carbonated water, Legos, paper clips, zippers, etc, all came out of Scandinavia.

It just cuts down on the water damage and mold that can result if tenants aren’t aware of the water spraying out.

The only one that has ever been used was one when a tenant wife got mad at her husband for coming home late after a night out "with the boys" and sprayed him down with one out of anger.