Little blue stain eaters.
Hi Laundryshark,
You may be interested to know here in Australia Drive was very popular for a long time but the advertising did not ever mention the little blue stain eaters.
The advertising slogan was ""ordinary powders get clothes ordinary clean, but Drive strives for total clean."
Ajax laundry detergent had the blue dots as well although they were not called little blue stain eaters, they were referred to as the "blue beads of bleach."
I think the ingredient in both powders was sodium perborate.
Drive was Lever and Kitchen's tough detergent and Ajax was Colgate-Palmolive's.