Foam is a chemical solution that has been mixed with air. Blue Mule manufactures foaming equipment that uses compressed air to create rich clinging foam, and also “airless” foamers that do not require compressed air. Foam has many benefits:
Foam clings to surfaces longer than liquid spray and increases chemical contact time.
Foaming expands the chemical, allowing less chemical to cover more surface area.
Foam prevents over-application by providing visual confirmation of coverage.
Foam is projected at a lower pressure than liquid spray and can be used on more sensitive surfaces.