I'm a google guide, not petco customer service. Try the website https://www.petco.com/shop/en/petcostore
https://www.petco.com/shop/SearchDisplay?categoryId=&storeId=10151&catalogId=10051&langId=-1&sType=SimpleSearch&resultCatEntryType=2&showResultsPage=true&searchSource=Q&pageView=&beginIndex=0&pageSize=24&fromPageValue=search&searchKeyword=&searchTerm=Cat+dewormer
Thanks! Your answer is awaiting moderation.