Aller-911® Hot Spot Foam with Aloe Vera quickly helps to relieve itchy, irritated skin while the bittering agent helps to deter gnawing and chewing. The quiet foam application is ideal for pets sensitive to sprayer noise. This gentle, quick-drying formula eliminates the need for ointments and gels. Aller-911 Hot Spot Foam can be used with spot on flea products. For dogs and cats.