In 1956, Milton Levine, founder of Uncle Milton Industries, created his own version of a formicarium, reportedly independently from Frank Austin. Levine got the idea when attending a Fourth of July picnic. Levine registered the term ant farm for his product and registered it as a trademark. Austin may not have used this term; in his patents, the formicarium is referred to as an “educational apparatus” and “scenic insect cage”, and in the 1936 magazine article about Austin’s device, the structure is called an “ant palace”. This trademark received notoriety when Scott Adams used the phrase in a Dilbert comic and received threatening letters from Uncle Milton Industries’ attorneys, demanding a retraction for the unauthorized use of the phrase. Adams satirized the incident in a later comic strip, in which Dilbert asked for a substitute phrase for “a habitat for worthless and disgusting little creatures”, to which Dogbert replied “law school”.