Also, dead shrimp pollute the water. Professional bait dealers know this. They try to remove dead shrimp from their tanks as quickly as possible. You can use frozen shrimp, too, although they tend to disintegrate rapidly, and spoil fast. However, there are times when only frozen shrimp are available, and you have to use them.
Some ardent anglers keep their own supply of frozen shrimp.
Of course, it's a good idea to check with your better half first. She may disagree with using the freezer for bait storage. Off hand, you wouldn't think it possible to carry dead shrimp in your tackle box. No, it's not a stinking idea, and it's not as crazy as it seems. Fresh water anglers carry pork rinds in little jars, and salt water anglers can do the same with dead shrimp.