yyz_barista 3 points 3y ago
I'd try dish soap or laundry detergent as a first attempt. Both are designed to remove fats, including chocolate.
ALoafOfBagels 1 points 3y ago
If you're looking for a home remedy, I'd probably try putting the stained part directly under a faucet of hot water and then vigorously rub put that spot with a towel with a little bit of soap on it (pour water on it so it's foamy).
If you're willing to buy a product specifically for cleaning shoes, I'd recommend Shoe MGK, it'd most likely be able to get the stain out and keep any shoes you own from becoming a victim from being worn to Starbucks.