Poisonous or toxic materials must be:
(1) Used according to:
(a) law and this chapter;
(b) Manufacturer's use directions included in labeling, and, for a pesticide, manufacturer's label instructions that state that use is allowed in a food establishment;
(c) The conditions of certification, if certification is required, for use of the pest control materials; and
(d) Additional conditions that may be established by the regulatory authority; and
(2) Applied so that:
(a) A hazard to employees or other persons is not constituted; and
(b) Contamination including toxic residues due to drip, drain, fog, splash or spray on food, equipment, utensils, linens, and single-service and single-use articles is prevented, and for a restricted use pesticide, this is achieved by:
(i) Removing the items;
(ii) Covering the items with impermeable covers; or
(iii) Taking other appropriate preventative actions; and
(iv) Cleaning and sanitizing equipment and utensils after the application.
(3) A restricted use pesticide must be applied only by an applicator certified as defined in 7 U.S.C. 136 Definitions, (e) Certified Applicator, of the Federal Insecticide, Fungicide and Rodenticide Act, or a person under the direct supervision of a certified applicator.