vectra 3d flea and tick prevention for dogs, kills and repels fleas, ticks & mosquitoes | fast?acting, waterproof, no prescription needed | extra large dogs over 95 lbs, 6?month supply is up for auction in Pet Supplies. The current bid is $1.00, 99% below the $98.99 MSRP, in New/Like New condition. Bid on this item at our Covington - Howard Litzler Dr - 300 location before the auction closes.