How many times should you rinse an empty pesticide container and measuring cups?

• A. 2
• B. 3
• C. 4
• D. 5

Answer: (B)

Rinsing pesticide containers is done to remove residues and prevent contamination. The standard practice is to rinse the empty container and measuring cups three times. To do this, fill the container or cup about a quarter to a third full with clean water, swish or shake well to rinse the sides, and pour the rinse water into the spray tank or as directed by the label. Repeat this two more times. After the three rinses, drain, then puncture or otherwise render the container unusable before disposal, following local guidelines and the label’s instructions for handling rinse water. This three-rinse approach maximizes removal of residues and helps ensure safe disposal and reduces cross-contamination. If a label specifies a different procedure, follow that, but three rinses is the widely recommended practice.