Clean windows or no streaks? Only one product does both well.
We’re dedicated to getting NZ consumers a fairer deal. We provide as much information as we can for free but we rely primarily on membership and donations to fund our work. You can help by becoming a Consumer member or making a donation. We’ll use your contribution to investigate consumer issues and work for positive change.
Our assessment is based on how well the cleaner removes greasy dirt from a ceramic tile. Cleanliness is assessed by measuring reflectance before and after cleaning. We also assess whether the cleaner leaves streaks.
Find out more about how we test glass and window cleaners
Glass and surfaces