Abstract: A crawling insect-proof pet bowl having an outer liner with upwardly sloping sides and downwardly sloping lip. An inner liner that conforms to the outer liner but that has upwardly extending sides that angle away from the sides of the outer liner and thereby forms a gap. The inner liner has a downwardly sloping lip that extends beyond the peak of the inner liner and partially down the downwardly sloping lip of the outer liner. The tip of the outer liner extends beyond the tip of the inner liner so that if the bowl is pushed against an object, such as a wall, direct access to the inner liner bowl is prevented. The gap formed by the upwardly extending sides of the outer and inner liner forms a barrier to the crawling insects and is particularly effective when armed with a biodegradable substance such as petroleum jelly. As a result, a spill-proof, long life, barrier to crawling insects is provided that is non-toxic, biodegradable, and easy to replace and clean.