although one neighbors think they are fleas, they do not jump around like fleas but do kinda look like them though maybe a bit smaller. Getting around the face of the birds a lot. I had in the past used frontline since we have dogs. Also was told Ivermectin, although I found it ineffective. Was wondering about the Eprinex, since they mention no down time in harvesting eggs. Was thinking of a total dose of 50 cc with a 1/2 dose over two days. How long should I expect before I start to see this stuff working?