"Bonkers Gourmet Cat Treats" ("for the cat who has everything"), presumably named after the effect they would have on a cat (?), were a brand of cat treat produced and widely advertised by Beatrice Foods Corp. until the late 1980s, when the company fell victim to a leveraged buyout and was dismembered.
It seems that Bonkers did not survive the transition, as I have not seen them anywhere in about 20 years.