Solitude IGR Feed Through Fly Preventive 20 lb

I have used fly predators and Solitude for years. I have found starting Solitude in early March (hardiness zone 6b) has made all the difference. I can't start putting fly predators out until mid-April at the earliest. My horses live next to a cow farm that practices little fly control, if any. My farrier tells me I have the least number of flies of all the farms he visits.

We bought it about a month ago, We figured that well, we tried everything else out with little or no results. But it only took about 10 days and what a difference weather they are in the barn or in the field. Fly masks help a little but add this stuff along with it and WOW!!!