David Gray's Poultry Dust 400gPOULTRY HEALTH TREATMENT CONTROLS FLEAS, LICE & TICKS IN POULTRY PROTECT YOUR POULTRY FROM LICE, TICKS & MITES AVAILABLE IN 3 EASY AND CONVENIENT SIZES DAVID GRAYS Poultry Dust for the treatment of Ticks, Lice, Fleas, Flies and Mites in Poultry. Poultry Dust is to be applied between the feathers of the poultry to treat and prevent poultry parasites, or into the roosts and crevices of buildings housing poultry.