Question About Baking Soda And Carpet Cleaning?

I know that a use of baking soda is to clean carpets, and that you can leave it there and then vacuum it up. I realized that I did the first step, but sort of just scrubbed the white carpet with a dry towel and never vacuumed. Can leaving the baking soda on the carpet cause damage? Because I might not return to the house that this occurred in for a while. Is it urgent that I get there anytime soon? As in, can the baking soda leave a new stain?