Universal Cleaner
Everything you need to know about Universal Cleaner in one place. Tap a question below for the answer. Surfaces, dilutions, ingredients, septic safety, shelf life, the bag-in-box, and more.
What are the ingredients in Universal Cleaner?
Two ingredients only: potassium hydroxide and reverse osmosis water. Formulated at pH 12.5, 18-month shelf life, GECA eco-certified, Sensitive Choice approved, made in Australia.
How long does Universal Cleaner last?
Universal Cleaner 2L typically lasts around 3 months for a 2 to 3 bedroom home; 4L stretches to roughly 6 months.
Does Universal Cleaner contain palm oil?
No. Universal Cleaner is palm-oil-free. Two ingredients only: potassium hydroxide and reverse osmosis water. GECA eco-certified, vegan, and cruelty-free.
Is Universal Cleaner safe for septic and greywater systems?
Yes, when used as directed. Universal Cleaner is suitable for standard septic systems, greywater reuse, and holding tanks.
What can I use Universal Cleaner on?
Universal Cleaner works on 20+ surfaces: kitchens, bathrooms, glass, tiles, floors, chrome with care, and soft furnishings. Avoid soft metals, raw aluminium, and Enduroshield-coated surfaces.
How does Universal Cleaner work?
Spray Universal Cleaner neat, wait 10 to 30 seconds, wipe. Used undiluted on every surface. →
Is Universal Cleaner chemical-free?
Not technically: nothing is. But Universal Cleaner has just two ingredients and is free from harsh chemicals, fragrances, phosphates, parabens, and bleach. →
Does Universal Cleaner kill bacteria and viruses?
Universal Cleaner is lab-tested against salmonella, campylobacter, and E.coli, but isn't a sanitiser or disinfectant and won't kill viruses.
Do I need to spot test Universal Cleaner first?
Yes. Spray a hidden area, wait a few minutes, wipe, check for colour or sheen change.
What can't I use Universal Cleaner on?
Avoid raw soft metals (aluminium, copper, brass, zinc) and aftermarket window tints or specialty glass coatings like EnduroShield. Spot test if unsure.
Can I use Universal Cleaner on food prep surfaces?
Yes. Safe for worktops, chopping boards, and sinks. Rinse with a damp cloth and air dry before food contact →
Is Universal Cleaner fragrance-free?
Universal Cleaner is 100% fragrance-free. Add 2 to 3 drops of essential oil to your spray bottle if you'd like a scent.
Is Universal Cleaner eco-certified and allergy-friendly?
Four independent certifications: Allergy UK, GECA, Sensitive Choice, and Eczema Association of Australasia →
Is Universal Cleaner safe to use around pets?
Yes. Fragrance-free, Allergy UK certified, and a safer choice in pet homes. Let surfaces dry fully before pets return →
Is Universal Cleaner safe for asthma and allergy sufferers?
Yes. Allergy UK certified, Sensitive Choice approved, fragrance-free, and low-fume. Simple two-ingredient formula →
Can I use Universal Cleaner on stone, marble, or granite?
Yes on most polished stone and quartz. Spot test, spray, buff dry. Extra care on unsealed or honed surfaces →
Can I use Universal Cleaner on TV, monitor, or laptop screens?
No. Use a dry Glass Cloth for the screen itself. Universal Cleaner is fine for bezels, stands, and cases →
How do I clean carpets, rugs, and upholstery with Koh?
Dilute Sensitive Laundry Liquid for large areas, use Universal Cleaner on small spots. Not for wool or silk →
Can I use Universal Cleaner on a leather lounge?
Yes, with care. Spot test, spray on cloth not leather, wipe gently, follow with leather conditioner. Avoid oversaturation. Skip on cracked, peeling, or aniline leather.
Can I use Universal Cleaner in a robot vacuum or mop?
We haven't tested Universal Cleaner with robot vacuums or mops; check your manufacturer's guidelines and spot test first.
Are there any fabrics I shouldn't use with Universal Cleaner?
Avoid wool, silk, cashmere, mohair, and other protein-based natural fibres. Sensitive Laundry Liquid is also unsuitable for these fibres. Use a wool-safe specialist or pro.
Does Koh offer Universal Cleaner in bulk or larger formats?
Universal Cleaner 4L is the largest retail format; Koh Pro is the B2B platform for ABN holders.
Can I use Universal Cleaner to wash fruit and vegetables?
No. It's a surface cleaner, not food-safe. Use clean running water or a certified produce wash. Universal Cleaner is fine on benchtops with a damp rinse after.
Can I add essential oils to Universal Cleaner?
Yes. Add 2-3 drops of Koh essential oil to Universal Cleaner in the Atomiser or Spray Mop. Swirl gently. More risks clogging. No pure citrus oils.