I have just weaned 3 bottle fed lambs, 2 of which had Orf. They have been housed in a brick shed with a hard standing in front and a very small grass paddock behind before now being moved to a field and shelter. How should I clean up the empty shed which becomes a storage area until next years lambs? I’ve sprayed with Jeyes fluid then jetwashed walls to 3feet and the floor. Anything else I could do?