Relaxivet Adjustable Dogs & Cats Calming Collar with Appeasing Effect - Cat and Dog Anxiety Relief - Anti-Anxiety Collar with Long-Lasting Calming Effect The ENHANCED NO-STRESS FORMULA of our calming collar for cats and dogs helps improve their unwanted behavior. The lavender calming collar helps reduce the stress of your pet. FAST & LONG-LASTING CALMING EFFECT  our calm collar is flexible and adjustable, so it suits small and medium, frightened, stressed, anxious, or hyperactive dogs and cats. It starts working within 1 hour. Its calming effect lasts up to 30 DAYS SAFE AND CONTINUOUS THERAPY  lavender and chamomile essential oils help relieve tension and anxiety. Safe for long-term use. No harm and no addiction ALLEVIATES FEAR OR STRESS-RELATED BEHAVIOR caused by fear, stress, being in heat, loud noise, transportation, traveling, vets visit, being alone, fireworks, thunderstorm, etc. or at least calms your pet ALLEVIATES FEAR OR STRESS-RELATED BEHAVIOR caused by fear, stress, being in heat, loud noise, transportation, traveling, vets visit, being alone, fireworks, thunderstorm, etc. or at least calms your pet.