So I learned a few things today -
1) Do not put your purse under the seat of the grocery cart when your kids are with you, so when they spill their water bottles, it only goes in your cart - not your purse.
2) Only give your kids water bottles with the sports tops so when they spill, they don't dump in your purse.
3) Bring your kids cups with you at the grocery store, so you don't have to worry about what water bottles are available for purchase.
4) Go to the grocery store without your kids.