Why must users follow re-entry intervals after spraying herbicides?

To ensure children and pets do not enter treated areas too soon.

Re-entry intervals are safety designations specified on product labels that dictate how long an area must remain vacant following an application. These intervals are critical because they allow time for the herbicide to dry and settle, significantly reducing the risk of accidental exposure. Children and pets are at a particularly high risk of exposure if they enter treated areas prematurely, as they may come into contact with wet surfaces or residual chemicals, leading to dermal or ingestion risks.