Fleas, window screens trashed by cats, blinds trashed by dogs and cats, door frames chewed by dogs, carpet and lower walls saturated/sprayed by urine, carpet shredded by cat, wood window sills scratched by cats, edge of butcher block counters scratched by a large dog's paws as he liked to check out the food on the counter, oh, and the worse--cat up the chimney, damper wrecked!

Guess instead of spray foam, a whole house fan, and automated windows, and all led fixtures,  I get solar panels and just add central air ....

He built an icf house with geo-thermal energy, spray foam, high-end windows, etc.

Glidden speedwall white semigloss for everything...ceilings, walls, trim...47.00 for a 5 gallon at home depot after my discount...i can spray the entire inside of a home for under $150....best decision I ever made, I even use it for all my exterior trim too...lasts just as long as the pricey stuff...

A gallon of Roundup sprayed on the painted trees may be cathartic.

I was on vacation so she called a company to come spray for spiders.

He recommend taking down the Sheetrock altogether...and spray waterproof paint. 

Mark the location with something,spray paint etc. 

What you did can ONLY illicit 1 outcome, a complete hectic shot-gun spray of replies and directions with 0 certainty of any validity of any of them. 

EVICT, also who is she to tell you only spray on the outside?