What’s Pearl’s problem? Her little sister Vida makes a terrible mess when she’s in Pearl’s room. What if there is a way to distract Vida from coming into the room in the first place?

Ramps, pullies, a toy train, fart spray, and a chocolate bar that looks like poop all come to the rescue in this episode of What’s Your Problem? Watch inventor team Joseph Herscher, Mikayla Stokes, and Brett Doar create a Rube Goldberg-style contraption or two. Then, Herscher tests them on his little friend Wiremu. Will they properly sidetrack or discourage a younger sibling from mischief?

Watch more videos from Rube Goldberg afficianado Joseph Herscher on this site, including Wiremu’s debut in The Cake Server.

Plus these: How To Make Fake Poo, a mini psychology experiment and How To Capture A Scent, an easy science experiment.