Shark Tank - Season 11 Episode 4 -

Entrepreneurs from Malibu, California, have modernized an age-old craft by offering knife sharpening by mail. A mother-daughter duo from Jacksonville, Florida, introduces a simple yet ingenious device that offers relief for all who suffer from bug bites. While an entrepreneur from Western Springs, Illinois, pitches a bathroom product to help block odors before they start. Finally, a Muslim American from Rockville, Maryland, invented a vegan alternative to pork rinds.