PDFWAC 246-215-05565
Facilities on the premises, operation and maintenance—Covering receptacles (FDA Food Code 5-501.113).
Receptacles and waste handling units for refuse, recyclables, and returnables must be kept covered:
(1) Inside the food establishment if the receptacles and units:
(a) Contain food residue and are not in continuous use; or
(b) After they are filled; and
(2) With tight fitting lids or doors if kept outside the food establishment.