What is a requirement for notification signs for pesticide applications?

The requirement for notification signs for pesticide applications is that they must resist rain for at least 24 hours. This is important because signs need to remain readable and informative to ensure that individuals can see and understand the potential hazards associated with the pesticide application after it has rained. If the signs are not water-resistant, they may become illegible, which could compromise public safety by leaving people uninformed about pesticide use in the vicinity.

The other choices do not reflect key requirements for notification signs. Sign visibility is important, but simply using bright colors does not suffice if the sign is damaged by rain. Furthermore, while communicating in multiple languages can enhance understanding in diverse communities, it is not a mandatory requirement for notification signs. The placement of signs at a specific distance is not directed by the standard regulations; the focus is primarily on ensuring signs are effective for informing the public after an application has occurred.