This is a mid-century ad warning women that their marriages could go in the crapper if they don't "safeguard their daintiness" by douching—with Lysol! The copy says that Lysol "truly cleanses the vaginal canal even in the presence of mucous matter." Ew. Also, it leaves no "greasy aftereffect." Double ew. But we're glad to know that Lysol has been tough on grease since the '50s. (Click on image to view full-size version.) [Vintage Ads]