Hi Marguerite, I have 5 dogs, so I am always searching for the cheap Heartworm, and Flea and Tick products available. The prices that you quoted the other day: >Frontline Plus (Ticks and Flea Protection) >Cats > 3 month $34.50 > 6 month $51.50 >Dogs >Small (2-22lbs) > 3 month $34.50 > 6 month $51.50 >Medium (23-44 lbs) > 3 month $35.50 > 6 month $53.50 >Large (45-88 lbs) > 3 month $36.50 > 6 month $55.50 >X-Large (89-132lbs) > 3 month $36.50 > 6 month $56.50 Your prices are about $20-$30 dollars cheaper than what I've ever been able to find. I'm wondering what the experation date is on them? Thanks, Andrea [Posted in FML issue 4831]