Canadians spend big bucks to keep our pets safe and healthy. But do the things we buy really work? Marketplace investigates pet safety products, putting them to the test and revealing why they could put your pet, and your family, at risk. If you drive with your pet in the car, chances are you own, or have considered buying, a restraint. But would they really protect you and your pet when it counts? Tom Harrington crash tests best-selling brands. Plus, Erica Johnson examines what's really inside products that are supposed to keep fleas off your pet and out of your home. We reveal why there's Paws for Concern.