I use it daily. When I fill the bird feeders I mix it right into that. It usually lasts about 2 days before I fill it again. I put it in the nest boxs and sprinkle it on the ground for the birds...I also have a pan set out for the birds. They dont' always use that (speically in the winter). The other animals get it daily too....the rabbits have it mixed in there feed daily, along with the pigs, sheep, llamas, horse, goats. It goes right into there feed. And then sprinkled into the bedding too for each of the animals. I give it to our dogs and cats too.
I know not everyone might agree with using it daily, but we haven't had any problems with it, so I keep doing it....
I know my mom uses it daily also with all her animals.