I've been using the PetArmor drops on my BLF and so far they seem to be effective. 3-month's worth costs me about 25 bucks or so. That being said, I hate the white residue that shows up immediately following the application... even though it only last a few days. While at Rural King the other day, I noticed several brands of flea/tick collars. These collars supposedly last 6 months, and are significantly cheaper at just 5-7 dollars each. The active ingredients are different, however.
Anyone use the flea collars on their dog? Are they as effective as the drop? Thoughts... opinions?