4-pack Specialist EU-made

Acidic Spray, 4-Pack

A targeted acidic spray for limescale, rust marks, mineral deposits, and recurring bathroom grime — sold as a 4-pack of 500ml bottles.

For Bathrooms and mineral deposits

Dissolves limescale, rust and mold on contact — no scrubbing needed on most surfaces
4 ready-to-use bottles — spray straight from the box, no dilution
Salt-based organic acid, not hydrochloric acid — no fumes, safer to handle
Biodegradable and phosphate-free

36,00 €

SKU: snfacidic500ml

Secure checkout — pay by card or your local method.

Biodegradable
Lab-tested in Nordic labs
Up to 72h protection

See and smell the difference in 72 hours — or return it within 14 days for a full refund.

Ships from Tallinn, Estonia
Tracked delivery in 2–5 business days
14-day returns

Best for

Bathroom scale
Rust marks
Glass and sanitary fittings

How to use

1 Apply to the affected area.
2 Allow a short contact time.
3 Wipe or rinse according to surface sensitivity.

Why choose it

Most eco-friendly cleaners are too gentle for established limescale and mold. This one is built specifically for that job — follow up with a probiotic spray afterwards to keep it from coming back.

Clear routine. Lower chemical load. Built for repeat cleaning.

Limescale, Rust, Mold — Gone in One Application.

Conventional bathroom cleaners scrub at the surface. Sanitify Organic Acid Cleaner goes to work at the molecular level — organic salts dissolve mineral deposits, rust, uric acid, and mold from grout on contact. No scrubbing. No harsh fumes. Just a surface that looks like new. Sold as a 4-pack of 500ml bottles — stock the bathroom, the kitchen, and keep a spare for the next flare-up.

4 × 500ml BottlesOrganic Salt FormulapH 0.4Removes Mold & RustDescales AppliancesPhosphate-FreeBiodegradable

What It Removes

Limescale

Dissolves calcium and mineral deposits from taps, showerheads, kettles, irons, and washing machines without abrasives or scrubbing.

Mold & Fungus

Breaks down mold spores and fungal colonies at the root — in grout lines, tile joints, silicone seals, and behind fixtures.

Rust & Oxides

Organic acid formula reacts with iron oxides to lift rust stains from metal fittings, porcelain, and stone surfaces.

Uric Acid & Deposits

Ideal for urinals and toilet bowls — dissolves uric acid scale that builds up where water sits and mineral deposits form.

How to Use

Apply

Spray directly onto the affected area — tiles, taps, toilet bowl, showerhead, or descaling kettle. No dilution needed for spray format.

Dwell

Allow 2–5 minutes contact time for light deposits. For heavy limescale or stubborn mold, leave for up to 10 minutes. The acid works while you wait.

Rinse

Rinse with water. Deposits will have dissolved or loosened. No scrubbing required on most surfaces — wipe away any remaining residue.

Pro tip: After acid cleaning, follow up with Sanitify Probiotic Cleaner on the same surface. The probiotic layer colonises the freshly cleaned area and keeps mold from returning for up to 72 hours.

Where to Use It

BathroomsTiles, grout, toilet bowl, urinals, shower screens

Kitchen AppliancesKettles, coffee machines, steam irons, dishwashers

Washing MachinesDrum descaling, rubber seals, detergent drawer

OutdoorGarden tools, metal fixtures, patio furniture with rust

IndustrialPipework, heat exchangers, processing equipment

Technical Specifications

Pack Size	4 × 500ml Ready-to-Use Spray Bottles
Formula	Organic salt-based (not hydrochloric/muriatic acid)
pH Level	0.4 — strong acid, safe to handle with standard gloves
Safe on	Ceramic, porcelain, stainless steel, plastic, glass
Environmental	Biodegradable, phosphate-free, no volatile compounds
Origin	Made in Estonia — EU quality standards

Frequently Asked Questions

Is the Sanitify Organic Acid Cleaner safe — it says pH 0.4, which sounds very strong?

pH 0.4 is a strong acid, but the key distinction is that Sanitify uses organic salts (naturally-derived acids) rather than mineral acids like hydrochloric (muriatic) acid or sulphuric acid. This makes it significantly safer to handle — it does not produce fumes at room temperature, does not burn on brief skin contact (though gloves are recommended for extended use), and does not corrode metal fittings or damage most ceramic and glass surfaces that mineral acids would attack. It is a targeted descaling agent, not a corrosive industrial chemical.

Will this remove black mold from bathroom grout and silicone?

Yes. The Sanitify Organic Acid Cleaner is effective at dissolving the organic matter and mineral deposits that allow black mold (typically Cladosporium or Aspergillus species) to anchor in grout and silicone joints. Spray directly onto affected grout lines, allow 5–10 minutes dwell time for established mold, then rinse. For deeply embedded mold in porous grout, a second application and light brushing may be needed. For best long-term results, follow up with the Sanitify Probiotic Cleaner, which colonises the freshly cleaned surface with beneficial bacteria and makes it hostile to mold re-establishment.

Can I use this to descale my kettle, coffee machine, or washing machine?

Yes — this is one of the most popular uses. Dilute the concentrate 1:10 with water and run through your kettle or coffee machine as you would a commercial descaling solution. For washing machines, add 100ml to the detergent drawer and run an empty hot cycle. The organic acid formula dissolves calcium carbonate (limescale) safely and effectively on all internal surfaces including metal heating elements, plastic reservoirs, and rubber seals. Always run one additional plain water cycle after descaling to rinse the appliance thoroughly before use.

What surfaces should I avoid using the acidic cleaner on?

Avoid using on natural marble and polished limestone — acids will etch and dull the polished finish permanently. Do not use on untreated aluminium (it can cause pitting with prolonged contact), painted surfaces (may affect paint adhesion), or any surface with metal that shows visible rust and you want to preserve the metal intact (the acid will continue to react with iron). For these surfaces, use the Sanitify Probiotic Universal Cleaner instead. For everything else — ceramic, porcelain, glass, stainless steel, chrome, plastic, PVC — the organic acid formula is safe.

How is this different from standard supermarket limescale removers?

Most commercial limescale removers contain either hydrochloric acid (which produces harsh fumes and corrodes metal) or citric acid (which is gentler but less effective on heavy deposits). The Sanitify Organic Acid Cleaner uses a proprietary organic salt blend that combines the effectiveness of mineral acids with the safety profile closer to citric acid — no fumes, no corrosive splash risk, biodegradable breakdown. It also contains no phosphates, which are a common environmental concern in conventional descalers that enter waterways and cause algae blooms.

Which Sanitify cleaner do I need?

All four cover different jobs. Here's the honest comparison — including where each one falls short.

	Acidic Spray 4×500ml	Acidic Concentrate 500ml	Probiotic Spray 4×500ml	Probiotic Concentrate 500ml
Best for	Mold, rust or limescale, ready instantly	Occasional deep descaling, if you'll reorder	Everyday cleaning, ready instantly	Everyday cleaning, if you'll reorder
What it does	Strips mold, rust & limescale on contact		Cleans + up to 72h probiotic protection
Before use	Nothing — pre-mixed, spray straight away	Dilute yourself — makes multiple bottles	Nothing — pre-mixed, spray straight away	Dilute yourself — makes up to 20 bottles
Price	36 € for 4 (9 €/bottle)	29 €	20 € for 4 (5 €/bottle)	25 € (~1.25 €/bottle)
Where it falls short	Costs more per bottle over time	Won't stop mold or limescale coming back on its own — follow up with a probiotic clean	Costs more per bottle over time	Needs a spray bottle and a minute of mixing before the first clean

Already cleared the mold, rust or limescale? Follow up with the probiotic spray to keep it from coming back for up to 72 hours — or get both from the start in the Microbiome-Safe Cleaning Set. Know you'll need this again? The 500 ml concentrate stretches further per euro than buying the pre-mixed bottles one at a time.