For many years from the 1960s through the 70s, he played Mr. Whipple, the grocery store owner who admonished customers "Please don't squeeze the Charmin".
In appreciation for his over 500 performances of the highly recognizable Mr. Whipple character, Procter & Gamble provided Wilson with a free lifetime supply of Charmin toilet tissue.
[Commercials are] the hardest thing to do in the entire acting realm. You've got 24 seconds to introduce yourself, introduce the product, say something nice about it and get off gracefully.