ProBlo Deep Throat Spray is an oral desensitiser designed to reduce your gag reflex and any discomfort you might experience while performing oral sex. The fast-acting spray uses a fine mist infused with Benzocaine to gently numb the sensitive. hard-to-reach nerves in the back of your mouth and upper throat. Try ProBlo in Cinnamon. Mint. Cherry. and new flavours. Peach. Strawberry. Watermelon & Cupcake.ProBlo Throat Spray comes in a 30 ml bottle. The numbing spray made in the United States contains no parabens or sugar. For use: Insert the applicator in your mouth with the tip pointing toward your throat. Spray 2-3 times. approximately 2-5 minutes before performing oral sex.