Kitchen wall cupboards?

As entering a minor profanity which runs in the veins I re-phrase.
Other than getting an expensive divorce how can i

(a) get 'er in doors ' the wife, to use the cooker hood every time she cooks. (b) Degrease the tops of the wall cupboards.
Don't tell me to get her to do it, hell will freeze over first.
I've just spent several.......... hours degreasing the cupboard tops using a scraper and wire wool as the products that claim to cut through grease are useless. There, no minor profanities you can post this now, thank you.