12 Things You Never Knew You Could Put in the Dishwasher

While it is essential to keep wooden brushes out of the dishwasher, plastic brushes and combs are perfectly safe. Warning, remove all hairballs before or they'll end up clogging your drain. 

Vent covers, along with switch plates and fan grilles, are approved for dishwasher as long as they are aluminum, plastic or steel. Painted, enameled, or plated items should remain out. 

As long as they are secured on the top rack, shin guards, mouth guards, and knee pads are all dishwasher friendly.