I like less packaging and the concentrated spray works great for me.
I rotate through 2-3 different fly sprays throughout the spring, summer, and fall, and this is one of our favorites. I like Equicare Flysect Super C because it's a concentrate that I can mix myself and it works well on flies and ticks. It smells better than any other fly spray we've ever used (it reminds me of the smell of Skin So Soft from Avon).
I don't find any fly spray lasts for any length of time. That said, this spray works just as well as the oil-based sprays and it doesn't smell like I am spraying my horse with kerosene. It smells wonderful. I will use this spray as long as they continue to make it.
I have been using about 4 years. This year it did not seem as effective. Love that I mix this in a 1 gal pump sprayer. I use on the horses and in the barn.