In the smallest sized Melatonin Implant, the thickness is just .08″ (2 mm). This tiny capsule is shot subcutaneously just under the skin. In larger animals, many farmers place it behind the ear lobe, where loose skin is available. In smaller animals, it is best to inject the implant into the area between shoulder blades.
Do not use automatic application guns, since they tend to jam easily with these slightly flexible implants.