2nd of 2 stories in the Gold Key series Bullwinkle and Rocky #10 - 7 pages - Fearless Leader sends Boris and Natasha to Laundro-City with a package because that laundromat is a message drop site for his spies. Bullwinkle accidentally buy the place from the owner and so get mixed up in the mess.
Reprinted in Rocky & Bullwinkle Present: The Best of Boris & Natasha 2019.