Pest ControlQuestion 186 of 319
Small dark flies that hover near the mop sink and floor drains, and breed in the slimy film inside drains, are most likely:
a.Fruit flies, which only land on whole fresh fruit
b.Drain flies (moth flies), which breed in organic slime inside drains and sewers
c.Indian meal moths, a stored-product pest
d.House flies, which prefer fresh food
Explanation
Drain flies (also called moth flies) breed in the gelatinous organic film that builds up inside floor drains, mop sinks, and sewer lines. Routine drain cleaning and biological drain treatments remove the breeding material. House flies prefer garbage and decaying matter; fruit flies prefer overripe produce.
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