What a childproofer does: Although it's tough to make any house 100 percent childproof, these pros come as close as possible. Childproofers survey your home inside and out for problem spots where kids can get hurt, devise customized solutions and select and install safety equipment. They're also up to speed on the latest safety codes and recalls and in the loop about new, innovative products. When to hire one: If you have young kids or grandkids, or if small children regularly visit your home, expert advice can be invaluable. A child-safety specialist can reveal hidden dangers you didn't know about and hazardous areas you might overlook. Even newborns are subject to certain risks, so many people choose to call in a childproofer before baby arrives. Child safety becomes a must once kids are mobile, beginning to roll, crawl and pull up.