The city has spent nearly $44 million advertising on buses and subways since January 2014, records show.

Health Department posters promoting safe sex and social services are responsible for $42.5 million in city contracts with Outfront Media, the firm that handles all MTA advertising except on MetroCards.

Ads in Grand Central for one year cost the Health Department more than half a million bucks, records show, while those at the 125th Street/Lexington Avenue station only cost only about $55,000.

The Parks Department spent $312,478 on subway and bus ads discouraging riders from feeding wildlife and informing the city that raccoons, deer, hawks, piping plovers and coyotes are “New Yorkers.”