Gross TheDenverChannel.com reports on a discovery a local mom stumbled upon. Walmart-brand ice cream sandwiches don’t melt, or rather, they look pretty much solid even after being left out overnight. I bet you can guess why! Yep, it’s not what most people think of as ice cream. To reduce cost, they’ve substituted cord syrup, guar gum, and cellulose gum for the milk-based products we’d normally expect. Yuck.