The interior wall surfaces are all tongue and groove boards (cedar), there are visible nicotine stains on the air returns.Every single surface will need to be cleaned in some capacity, but I am left scratching my head at effective solutions.I've found a few anecdotal recommendations about using white vinegar or TrisodiumPhosphate, but when you need to scrub the walls and the ceilings of a 1700+ sqft house that seems pretty daunting and time consuming given that it is tongue and groove.

The main point of the stone is, if it rains again this winter they can still get in there to work and it wont matter because the water will just permeate through the stone. 

Nicotine in cigarettes is what leaves the lasting residue and smell.

She is a heavy smoker and the nicotine is dripping off the blinds.

@Joe SplitrockI agree Joe, that the smell dissipates over time, but the nicotine and film is over everything.

Your other tenants will either get angry about the dog barking and take it out on you, in the form of non-payment or worse, and then the SMELL will permeate from there.I'm begging you...learn from my mistake.

The blockchain technology is becoming commercialized by various other companies, and the concept of digital currency is already permeating society even in ways that don’t make us think about cryptos.

Gentrification is permeating across the Bay Area and area's that use to be undesireable are becoming more desireable because of affordability in certain area's which increases property value.

The longer the smoking continues, the more it permeates into finishes, walls, ceilings, floors, even insulation.

Nicotine is best removed by washing walls with TSP find at hardware store, DOG smell is one thing dog urine is another,, so determine if flooring is damaged and if removal is needed..