New moms listen up: Keep your kids healthy and happy by regularly cleaning their toys using these nontoxic ideas. Plastic toys can be disinfected and washed on the top rack of your dishwasher. For items that may not be strong enough to withstand the hot temperatures of the dishwasher, wipe them down with hydrogen peroxide to kill germs. And for plush toys, placing them in the freezer overnight will kill bacteria that may be harboring inside. The cold air will freeze germs to death.