I bought it from Home Depot 3 weeks ago and it worked fine up until yesterday, I pumped and sprayed maybe 10 gallons of paint through it.

Even if there is mold up there (and there's a good chance there isn't), disposing of the damaged drywall and spraying an anti-microbial on the wood framing should be all the remediation you need.Put up some new sheetrock, paint, and you're good as new.

Many steam vacuums have a setting where they only vacuum cycle instead of spraying steam.

Ceilings / prime - then spray trim, then hand cut & power roll top coats (2): 1000 sq ft = 40 hours & $300 supplies

What some landlords do is by the stuff themselves at Lowe's or Home Depot with a pump sprayer and have their maintenance guy go around the buildings one to two times a month spraying as it's cheaper.

They sprayed 22 days ago and claimed it would take a max of 10 days for all of the bees to die. 10 days came and went and the bees were still there.

My initial thought is trying to spray the floor joists in the basement with vinegar.

Mine was a spray application and *knock on wood*, it has worked every time. 

Neither our contractor, nor my husband and I when we visited once a year, ever realized they had painted the walls gold, had installed a kitchen backsplash, had basically destroyed the carpeting (covered by a lot of heavy furniture), spray painted the patio, stained the kitchen cabinets, replaced a light fixture, and apparently never cleaned the kitchen, nearly ruining all the new appliances. 

He ordered three spray treatments, around the time of the third treatment he quit and another property manager came into the situation who again did not care and thus I was left to tackle the problem on my own.