This is a problem every year in every store. The pesach isles are open as well as the chometz isles. The refrigerator is mixed with Pesach and non-pesach products with a sign that everyone should check the labels. This is very confusing but much easier for the store than separating sections for Pesach two or three weeks early. It would be more beneficial for the Olam if stores would NOT put out Pesachdik products until they divided the fridge, separated the isles, and put the Pesach signs up.
It is better to deligate one fridge and post a sign “Passover Only” for those who do not wish to check every label, such as children shopping for their moms or even husbands who are NOT used to shopping. And NOT put end of the isle Passover products in any other place than the Passover isles because it confuses the Olam when one end has Passover specials and inside the isle has chometz or the next isle end has chometz.