Engineered DIY cleaners · Formulations Nº 01–07
Make the same cleaners yourself, for a tenth of the price.
Store-bought sprays are mostly water. RoSho Labs rebuilds them from patents and safety data sheets, so you mix the few ingredients that actually clean and add your own water.
The math
Store-bought · six sprays
≈ $50
Every time you restock the six sprays.
Mixed at home · the same six
≈ $5
About 80¢ a bottle in ingredients. You add the water. The manual and starter supplies are a one-time cost.
Over ten years
Getting started typically runs $50–60 for the bulk ingredients, bottles and supplies. That covers about 8 rounds, or about 4 years at 2 restocks a year. Most items are drugstore staples. The chart assumes about $50 per round of six store-bought sprays and about $5 in ingredients per round mixed at home.
The method
Every RoSho Labs formula goes through the same three steps. Nothing is guessed. Each ingredient level traces back to a patent, a safety data sheet or a published spec.
Start from the store bottle's safety data sheet and ingredient disclosure. Find what does the cleaning and how much of it is there.
Rebuild it from published patent ranges using a few widely sold ingredients, then refine it over dozens of test batches. Built from the ranges, never a copy of anyone's exact formula.
Same smudge, both sprays, one wipe each, and we show the result even when theirs wins. Then compare what it costs you per ounce.
The lineup
Pick a bottle to see its label. Nº 01–06 come with Tier 1; Nº 07, the disinfectant, comes with Tier 1 Pro. Labels list ingredient categories only. Exact ingredients, amounts and mixing steps are in the lab manual.
Savings calculator
Drag to set what you spend now, in US dollars.
What's coming
Tier 1 and Tier 1 Pro are digital and launch together. The starter kit follows later. The waitlist hears about each release first and gets the founding price: 50% off.
Launching together
Digital · six core cleaners
Counter, Bath & Tile, Carpet, Stove, Laundry and Glass. Buying those six sprays at the store runs about $50 every time you restock. The manual is a one-time buy that costs a fraction of that, and the ingredients for all six come to about $5.
Digital · adds Nº 07
Nº 07 is hypochlorous acid, the same molecule your white blood cells make when they engulf bacteria. It's also the active ingredient in EPA-registered disinfectants used in hospitals and food service. Held at the right pH, nearly all the chlorine in the bottle stays in this form, which is about 100 times more effective as a disinfectant than the hypochlorite in bleach.
Later
Everything you need, shipped
Everything you need to start mixing, in one box: the ingredients shipped dry, plus the tools. Unlike the big brands, we don't ship you water. You add your own.
Waitlist
You'll get the Never Mix chart now, and an email at launch with the founding price, 50% off. Nothing else. One question helps us decide what to film next.
Added
Your Never Mix chart is ready. Print it and keep it where the cleaners live.
Download the chart (PDF)Questions
Tier 1 Pro adds Nº 07, the disinfectant. The other six mix from a few weighed ingredients. Hypochlorous acid is made with an electrolysis cell and only stays in its most potent form within a narrow pH window, so Pro adds a chapter on buffering, testing and storage, plus a guide to the hardware you'll need. Both are digital and launch on the same day.
Published patents from the companies that make commercial cleaners, plus the safety data sheets those products are required to publish. The manual cites the source for every ingredient level. Each formula is then refined over dozens of test batches. They aren't lab-certified commercial products.
No. They're built from published ingredient ranges, not from anyone's exact formula. RoSho Labs isn't affiliated with any brand we compare against.
Because a ready-to-use spray is mostly water. Paying to ship water is the markup we're poking at. You mix the working part at home with water from your own tap or a jug of distilled.
The ingredients are common and widely sold, used at low concentrations. They are still chemicals, so wear gloves and eye protection, label every bottle, keep them away from kids and pets, and never mix cleaners. Each formula in the manual lists its own surface and safety limits.
Pricing is still being set. The goal is a fraction of the roughly $50 that one round of the six store-bought sprays costs, so it pays for itself the first time you'd otherwise restock. The waitlist gets a founding price of 50% off.
A quick reference for keeping cleaners apart, store-bought or homemade. Combining them doesn't make them stronger, and a few pairs react with each other.
Makes chloramine gas. Some glass cleaners contain ammonia, and so does urine.
Makes chlorine gas. Includes vinegar, lemon or citric acid, toilet-bowl cleaners and some glass cleaners.
Can form chloroform and other chlorinated compounds.
In the same bottle, forms peracetic acid, a corrosive irritant.
Back to back on a still-wet surface can release chlorine gas. Clean, rinse, then disinfect.
One cleaner per bottle · label everything · open a window