Here a tip for preserving berries' longevity: wash them in vinegar. Prepare one part vinegar(white or apple cider) to ten parts water. Dump your berries in, give them a swirl, drain, rinse and store in the fridge.
How to make strawberries last longer - 3 cups water, 1 cup vinegar, soak 10 minutes, dry COMPLETELY - vinegar taste disappears only if completely dry - pack back in original breathable container. Extends life at least days.