About the Inventors

David Marks is a Seattle resident with ideas. When you are out there getting your hands dirty, you realize that you don't want to get your hands dirty. Necessity is the mother of invention right? Read more

Design Process

The Cultisifter began with a standard three tine cultivator, chicken wire and a welder. It was pretty ugly, but it worked! See photos from the beginning

What is the Shark Tank?

ABC's hit TV show the Shark Tank gives entrepreneurs an opportunity to turn ideas into a money making reality. The "Sharks" are investors and business moguls who know a great deal when they see it, but aren't afraid to put you through the ringer in the process.