Sometimes janitors don’t follow the dispensing instructions, believing that more color or stronger odors means a more effective product. But of course, this is a dangerous mistake.

To help alleviate problems, chemical proportioner training should be hands-on. Demonstrate what the chemical looks like concentrated, and then when it’s properly mixed. Follow-up by having users show the instructor how to properly fill a container. Explain that if color ever strays from the example, they should alert management. To make color identification even easier, match the chemical color to its corresponding label color. That way, even if the users can’t read English, they can safely dilute the correct product.

Read through material safety data sheets and point out where they are located. Have users put on the necessary personal protective equipment so they become familiar with it.

Displaying posters with easy to understand graphics can also reiterate proper product dilutions and surface pairings.