What can we do to remove owls from our warehouse?

We have had owls move in to replace the pigeons which we thought was a real pain, but the owls are leaving even a bigger mess. They are damaging product with their droppings and it is every where. We need to keep cleaning it up after them, but as I said the mess is far bigger than the pigeons. So what can we do to have them removed and relocated?
Answer: 
Please contact the Fish and Game Region office in your area for help. Panhandle Region (Coeur d'Alene) 208-769-1414 Clearwater Region (Lewiston) 208-799-5010 Southwest Region (Nampa) 208-465-8465                                (McCall) 208-634-8137 Magic Valley Region (Jerome) 208-324-4359 Southeast Region (Pocatello) 208-232-4703 Upper Snake Region (Idaho Falls) 208-525-7290 Salmon Region (Salmon) 208-756-2271  
Answered on: 
Tuesday, June 26, 2012 - 9:59 AM MDT