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Public Health Control
Applying the correct amount of pesticides

It may be human nature to believe that if a little is good, then a lot is better.

Avoid this temptation when mixing and applying pesticides because heavier than necessary applications of pesticides can have negative consequences.

Overdosing can cause harm to the environment, including runoff into surface and ground water, buildup of long-term residues, and damage to desirable plants and beneficial organisms.

Applying pesticides at rates in excess of label directions is also considered to be a misuse of that product and thus is illegal. Finally, pesticides are not cheap; unnecessarily high application rates for any product are costly.

Many homeowner products require no additional mixing for liquid formulations. If mixing a concentrate with water is required, often the label will state the percentage desired concentration that should be achieved before application.

Other liquid products may list their rates as an amount to apply per unit area. For most lawn-care products, this information will be given in terms per 1,000 square feet. Here it is important to have accurate dimensions of the area to be treated to ensure correct mixing of materials in the application equipment, usually in a hose-end or hand-pump sprayer.

Many of the product labels for granular materials on today’s market include a table stating the correct setting on popular granular lawn spreaders for accurate delivery of the product to the site. These settings vary depending on granule size and weight, which affect flow rate and distribution. Read label for proper settings.

Prev: Storage and disposal of home-use pesticides Next: Attentions when using pesticides

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