Wendy Johannson and Claudia Harvey's booming enterprise can be traced back to a chipped fingernail. In this episode of the PROFIT BusinessCast, the green-thumbed founders of Dig It Handwear talk about how they took a simple idea-protecting their manicured fingernails from the effects of gardening-and turned it into a popular product carried by Home Depot. Covering how they overcome manufacturing and quality control issues, secured sales and distribution channels and built their relationship with a high-profile investor-Kevin O'Leary-their story is a veritable how-to for any consumer-goods startup.