Article 11

Member States shall ensure that:

1. (a)

   the disinfectants to be used and their concentrations are officially approved by the competent authority;

2. (b)

   the cleaning and disinfection operations are carried out under official supervision, in accordance with:

   1. (i)

      instructions given by the official veterinarian;

   2. (ii)

      the procedure for cleaning and disinfecting an infected holding, as laid down in Annex II.