Hello Neighbors, I have a 6 month supply of Advantage Multi for Dogs (20-55 lbs). It's a topical solution that works for both heartworm prevention and as a flea repellent/killer (does not work for ticks). I don't need it anymore. It retails for about $80 for a 6 month supply, but I'll take $40 for it. Just don't want it to go to waste and want someone with a dog to be able to use it. Let me know if you're interested. Cheers, Rob N. Saint Clair Street