Mini 'Shark Tank' Stars Share Their Secrets to Success

— -- Ryan Kelly, 14, and Mikaila Ulmer, 11, may look like just kids but the two are also successful entrepreneurs who each got their start on “Shark Tank.”

Mikaila secured a deal with “shark” Daymond John for her lemonade business, while Ryan found an investor in “shark” Barbara Corcoran for his dog treats business.

Mikaila of Austin, Texas, got her idea for BeeSweet Lemonade -- recently rebranded as Me and the Bees Lemonade -- when she was 4.

“I got stung by two bees in one week,” Mikaila told ABC News. “I was so afraid of the bees that my parents encouraged me to do research on them and found out that they are dying, so I decided to create a product that helped save the bees.”

Mikaila and dad Theo appeared on "Shark Tank" during the ABC show's sixth season. The pre-teen’s lemonade, made with flaxseed and honey, is now sold in over 60 Whole Food stores.

Mikaila also invests a portion of the profits from her company to Heifer International, Sustainable Food Center of Austin and Texas Beekeepers Association to help save the bees.

Ryan also had a personal inspiration, his dog Barkley, when he pitched his Barkery business on “Shark Tank” in 2013.

“Me and my brothers would always fight about giving him a treat because the nasty smell would always stay in your hand from all the oils on it,” the Stamford, Conn., resident told ABC News. “I thought why not make my own for him?

“We had our treats packaged in little zip-lock bags and we put a sticker on them and we dropped a business card in them,” Ryan said of his door-to-door start.

Ryan’s products are now sold under the name Ry's Ruffery in chains including Wegmans and PetSmart.

"Our dog treats are made with pea flour instead of regular or whole wheat flour so they are all-natural, grain free, with human-grade ingredients," Ryan said. "So you can actually take a bite out of them if you want."

When asked what advice he would give to other young entrepreneurs, Ryan said, "Give back to the people who gave you your start, have fun and also be a kid while you’re running your business."

"There were so many people who told me I couldn’t do it and now I just said, ‘Find me in 10 years,'" he added. "I think that there’s no barrier to any age that you can start a business at."

Mikaila shared similar words of inspiration for business-minded youth.

"My one big key is don’t be discouraged by life’s little stings but get back up and spread your wings because when you’re having a company, there are sometimes you can be let down but don’t let that stop you," she said. "Keep on going."