Advantage flea protection for large dogs (10-25 Kg) Six month supply of drops (topical treatment). I bought these by mistake from petsmegastore in Australia on line, I meant to buy advantix. I paid about 80.00 for this. This is way chaeaper than you would pay at any vet here in Ontario. Can meet you in North Gower, Kemptville, Prescott or downtown Ottawa or at the Canada Post building at Heron & Riverside.