PALM DESERT, Calif. -

The two bombs that went off at the Boston Marathon, killing three people and wounding 264, were detonated with the kind of remote device used to control a toy car, U.S. investigators told a House of Representatives panel on Wednesday. 

It's further evidence that the bombers used items that were commercially available to create the deadly explosions including BB's and nails inside of a pressure cooker.  "I thought, 'Oh my gosh, I can't believe they can use something like that to create something so diabolical,' said Jan Boydstun, the owner of Kitchen Kitchen, a cooking store in Palm Desert.  "I really thought, 'I sell them, and I don't want to be responsible for that.'"

Despite her shock, she chose to keep pressure cookers on her shelves.  Unlike some Williams-Sonoma stores in Boston that pulled them out of respect.  Boydstun says the blame shouldn't fall on the equipment.  "It does so many good things, it's just the evil people behind it that can take something that's out of your mom's kitchen and turn it into something so horrible," said Boydstun.

The parts from a remote-control car can also be found at many stores including Uncle Don's Hobbies in Palm Desert.  Owner Kevin Koch doesn't feat what someone could do with items from his store. "They sell batteries, batteries like we have, that can kill people," said Koch.  "It doesn't concern me that we sell those types of items, just because somebody else uses them for a bad purpose."

Koch says there's no easy answer to try preventing these items from being used for the wrong reasons again. "I don't think we can legislate or govern some standard use product and say because they were used for bad we can no longer have them."