When cleaning a sprayer, you should fill and flush the tank with water at least _________ times before using a cleaning solution.

Flushing the tank of a sprayer with water multiple times is essential to ensure that any residual pesticides or chemicals are thoroughly removed before introducing a cleaning solution. Doing so reduces the risk of cross-contamination, which can lead to unintended chemical reactions or phytotoxicity when applying different products.

By filling and flushing the tank at least five times, you ensure that any lingering residues are adequately diluted and washed away. This thorough process not only protects the integrity of the cleaning solution used afterwards but also safeguards the health of plants and pest control materials being treated. The emphasis on five flushes strikes a balance between effective cleaning and practical application, making it a widely recommended practice in the industry. This careful approach is particularly critical when switching between products with different active ingredients, ensuring that they do not compromise each other's effectiveness or safety.