we found out on another thread about this idea...it sounds strange but, it is an idea they used it for loud noises from storms like thunder so it may work for the firecracker noises... u put a little t shirt on him they actually make a wrap to put on the dog to stop the fear it is a tight fitting shirt made of fabric...all i know it has helped Oliver with the thunderstorms ..he used to go hide in the washroom and shake ...but not now when we put the t shirt made of cotton sweat suit fleece
u could give it a try
