Observations made in orchard and row-crop areas of the Pacific Northwest indicate that most applicators destroy burnable containers soon after their content of pesticide has been emptied. Disposal of glass or metal containers, and particularly those of metal, is less prompt. Occasionally, these glass or metal containers may be used as drinking-water jugs or for other household uses. Residual parathion in 12 paper bags that had each contained 4 pounds of the 25% water-wettable powder was found to range between 0.25 and 1.20 gm with a mean of 0/60 gm of the technical material. Twenty-two 5-gallon metal drums which had contained 45.6% parathion emulsifiable concentrate were found to contain residual amounts of technical parathion ranging between 1.25 and 9.48 gm with a mean of 2.73 gm.