Parents check your cabinets for the Tommee Tippee Sippee Spill-Proof Cups over 3 million cups are being recalled due to mold developing in the valves are causing children to become sick.

The popular sippy cups are sold at popular retail locations such as: Walmart, Target,Kohl's and on-line.

The consumer product safety commission says:

Mold can develop on the removable, one-piece, white valve inside the spill-proof Tommee Tippee Sippee cups when it remains wet/moist and is infrequently cleaned. The CPSC advises that mold ingestion poses a risk of gastrointestinal symptoms and infections in consumers with compromised immune systems.

Consumers should immediately stop using the recalled Sippee cups and contact Mayborn to receive a free replacement cup.