What is one requirement for sign posting after a chemical treatment?

The requirement that the sign must be sturdy and noticeable is critical in ensuring that it effectively communicates important information regarding the chemical treatment to the public. A sign that is durable can withstand environmental conditions, ensuring that it remains legible over time and effectively alerts people to any potential hazards associated with the treated area. Notability is key, as a visible sign catches attention, thereby reminding individuals of the treatment and any necessary precautions they should take.

Temporary signs are often used in various contexts, but sturdiness is essential in aquatic settings where signage may need to endure exposure to water and weather influences. While electronic and biodegradable materials can have their own benefits, the primary focus here is on the need for that sign to reliably convey essential safety information.