My dog is more organized than this company. They sent me the wrong product TWICE (of course replacing it with a less expensive product - Frontline sent instead of Seresto collar). They told me to keep the Frontline and they would quickly send me the Seresto I ordered. I then received ear drops. What the? The invoice was for another person, but sent in an envelope addressed to me. I called again. They said, "If you mail them their product, they will mail you yours." So now I am an employee of PetCareSupplies.com?? HAHA. I did it out of respect and empathy for the other person (and their animals) involved, not holding my breath that I would get mine in return. Two weeks later - no Seresto collar and I am out of money I have spent on the collar and shipping - $42.85. I sent an email demanding a refund, but I am not holding my breath that that will happen either. They ship internationally - it takes forever and I question the authenticity of the product they sent me (the Seresto collar didn't smell or feel like the ones I have used in the past). I tried to save money, but should have trusted my gut. I would avoid if I were you.