Hi,  We purchased this flea & tick treatment for our dog, but have decided to go with another treatment instead. It's Bayer's K9 Advantix II Red 4-month flea & tick drops for large dogs, 21-55 lbs. (7 weeks of age and older). The box states that it is waterproof and protects against ticks, fleas, flea eggs, flea larvae, mosquitoes, biting flies and lice. It retails for $62.99 (http://www.petsmart.com/product/index.jsp?productId=10986925), and you can find average savings online of about $10.  The package is brand new, unopened, and contains 4 applications for a 4-month supply. We'd like to sell it for $45. Please email if interested.  Thanks,  Sharon