Captain Underpants Wiki
Are your kids annoying? Do they fight and whine and complain all the time? Do they refuse to eat anything but macaroni and cheese? Are they sucking the LIFE out of you? Well, Rid-O-Kid 2000™ is here to help. Our scientifically proven formula will transform even the most wilful child into an obedient, respectful and hardworking slave– er, I mean, angel. And Rid-O-Kid 2000™ has a full day's supply of Vitamin C, so you can feel GOOD about dosing your child with a narcotic that has never been tested for long-term effects. So turn your brat into a brown-noser... with Rid-O-Kid 2000™. Rid-O-Kid 2000™ - the cure for childhood.
  —Sir Stinks-A-Lot in an advertisement for Rid-O-Kid 2000  


Yesterday George and Yesterday Harold under the effects of Rid-O-Kid 2000.


Rid-O-Kid 2000 is a spray made by Sir Stinks-A-Lot to take over minds of children.


When kids get sprayed with this, they practically become slaves to the adults in the school. However, the affected children can still be manipulated into doing the chores uneffectively, as George and Harold thought, and later proved. The spray can't affect kids who are suffering from colds or other nasal related problems.


Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot[]

Sir Stinks-A-Lot personally endorses this spray on TV. Later, he locks Yesterday George Beard and Yesterday Harold Hutchins in his office and sprays them with Rid-O-Kid. Their present versions manage to manipulate the children into doing ridiculous tasks, such as filling a car with cottage cheese and washing the windows wrong. It's likely that the product was discontinued after Sir Stinks-A-Lot was defeated and lost his intelligence.