Is the Dollar tree food a better buy?

Looking for the most frugal place to shop.With the price hike to a $1.25, does it make sense to buy groceries from the Dollar tree? I'm thinking the unit price went up per ounce. Are there things that makes sense to still buy at the Dollar tree for food? Would you recommend going to Aldi instead? Looking to stretch my dollar the most but don't want to pay a lot per ounce.Thanks for your input.