You've got the house babyproofed with all the gadgets and preventive tools that should keep young kids out of the dangerous areas of your home. No worries, right? Wrong. There are hidden hazards in the home that can do serious damage to a child. Be extra-careful and warn children of their risks. Start in the bathroom. Those safety suction cups on the bottom of bath seats aren't always reliable. Bath seats and rings are convenient for Mom but can cause a child to be trapped underwater if they come loose and topple forward. It takes just a couple of minutes to drown, so never leave a child in the bathroom unattended, even if he sits in a chair. Bath products such as oils and soaps should have child-resistant packaging because of the presence of liquid hydrocarbons, a substance that can cause irreversible lung damage. Be vigilant about keeping these substances and those that contain mineral oil away from children. It may seem like you're getting a great deal by investing in baby gear at a yard sale, consignment shop or as hand-me-downs, but these "deals" may have missing parts or may not conform to current safety regulations. Be sure to obtain the owner's manual if you absolutely must use previously owned baby gear.