Awful. Do not waste your money. Pets best will reclassify your claims under vague categories that do not match what the pet was seen for just so they can argue pre-existing conditions. My veterinarian wrote them a letter supporting my claim appeal, stating he was not seen for any pre-existing condition. They ignored the letter and denied it again. Their phhone lines will leave you on hold for 45 plus minutes and their complaint form is a joke.