6. Following preliminary cleansing and disinfection—
(a)manure and used bedding must be treated in accordance with Part 3 of this Schedule; and
(b)all surfaces must be subjected to the following procedures—
(i)grease and dirt must be removed from them by the application of a degreasing agent;
(ii)they must then be cleansed with water;
(iii)they must be washed with cold water, following which further disinfectant must be applied;
(iv)after seven days, they must again be treated with a degreasing agent, rinsed with water, sprayed with disinfectant and rinsed again with water.