What You Need to Know About Foam - Cleaner Solutions
Jun 03, 2016·The foam clings to the wall or the side of the truck and runs down the truck slowly. This allows the detergent time to do its job. In a food processing plant, they use a lot of foam to make sure they can see that the entire area, including all the nooks and crannies, get some detergent applied. In other words, the foam is the indicator.