How can I effectively store summer squash to ensure its freshness and quality for a longer period of time?

To effectively store summer squash and maintain its freshness for a longer period of time, keep it unwashed in a perforated plastic bag in the refrigerator's crisper drawer. Avoid storing it near ethylene-producing fruits like Apples and bananas. Check the squash regularly for any signs of spoilage and use it within a week for the best quality.