US Retailers WowWee Customer Service February 12, 2019 19:25 Updated Follow Mad Lab Minis will be available this March at Walmart and Amazon! Stay tuned to our Facebook page for the latest updates regarding Mad Lab Minis. Related articles Mad Lab Minis: Where to download the Mad Lab App Where to buy? Buttheads: US Retailers Can I use the stamps included with S.W.A.K. to mail something? Where to buy? Comments 0 comments Article is closed for comments.