These are what I use for Koch Chemie Green Star, Pol Star, as well as other cleaners. They allow me to be more precise when cleaning and not waste any product. The light airy foam provides amazing cleaning action when paired with a brush or Scrub Ninja from Autofiber (https://dtlrsupply.com/products/autofiber-scrub-ninja-3-pack)

Bottle is 200ml which is approximately 6.7 oz

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