Our Proprietary Thorough CBD Treatment Provide ultimate benefit for your Pet Health. The most important microorganisms are lactic acid bacteria, yeast and photosynthetic bacteria. Our EM-ceramic beads are made of clays in which effective microorganisms have been baked anaerobically (under exclusion of oxygen). In this way, the versatile properties and information of EM are preserved and passed on to the wearer. The effect of the EM ceramic tick collars is unlimited in time.