I tried these because my schnauzer just freaked out when the thunder or the dang fireworks started. They are a Gem! I do have to anticipate early enough to give them to her to kick in in time for her to be comfortable. (Alexa, will I get thunderstorms today?) On July 4, she lay on the couch beside me and slept. Did my heart good. I'm ordering my second bag of these, I don't want to run out..