There are certain screens and grates that keep things out. However, even with these wire pan grates you still might have to stand guard to prevent items just out of the oven from disappearing. In the mean time they will, though, provide space to cool your donuts, muffins, breads, pies, etc. We carry a good range of donut screens, glazing screens to wire ribbed grates. Plenty of variety for your multiple baking needs. And sturdy enough for using in the oven. Also great for displaying baking items for that fresh out of the oven look!