Product Placement Blog ➞ Dishwashing Liquids and DetergentsSunlight Dishwashing Liquid in Seinfeld Season 6 Episode 5 “The Couch” (1994)December 9, 2019 Sergey TV Show Hi! On Monday, December 9, I analyzed a TV Show and product placement was spotted: Sunlight Dishwashing Liquid in Seinfeld Season 6 Episode 5 “The Couch” (1994).Here are 1 image(s) below: