Koh AU logo
Koh AU logo

All articles

Can I use Bathroom & Shower Cleaner on the toilet bowl?Updated 6 hours ago

TL;DR: Above the waterline, yes. Bathroom & Shower Cleaner handles the seat, lid, rim, under-rim, bowl walls, base and exterior. Below the waterline it is the wrong tool, because a spray just dilutes into the bowl water and washes away. That part of the job belongs to Loo Cleaner Tabs, which are built to sit in the water and dissolve where the staining is. Scrub with Loo Blade, flush, and the whole toilet is done in one session.

Read on ↓
Koh Bathroom and Shower Cleaner
Koh Loo Cleaner Tabs working in the toilet bowl

Can I use Bathroom & Shower Cleaner on the toilet bowl?

Above the waterline, Koh Bathroom & Shower Cleaner is the right product for the toilet. It suits the seat, lid, rim, under-rim, bowl walls above the water, cistern, base and exterior. Below the waterline it is the wrong tool, because the foam dilutes into the bowl water and washes away before it can work. Koh Loo Cleaner Tabs are built for that part of the bowl. Used together they cover the whole toilet.

✓ The waterline is the dividing line

Everything above the water is a spray-and-wipe job, and Bathroom & Shower Cleaner is built for exactly that. Seat, lid, hinges, rim, under-rim, the bowl walls above the water, the cistern, the base and the outside.

Everything below the water is a different problem. A foaming spray hits the water, dilutes, and is gone. Nothing to do with the formula, it is just what happens when you spray a liquid into more liquid. That is the job Loo Cleaner Tabs were made for.

Above: spray cleaner Below: tablets Both: Loo Blade

How do I clean the toilet above the waterline?

To clean the toilet above the waterline, spray Koh Bathroom & Shower Cleaner onto the seat, lid, rim, under-rim and the bowl walls above the water, plus the cistern and exterior. Let the foam sit for a few minutes to loosen grime and mineral staining. Scrub around the bowl and under the rim with Koh Loo Blade, and wipe the seat, lid and outside with a damp cloth. Flush to clear the loosened soil.

✓ Above the waterline, four steps

1

Spray everything above the water. Seat, lid, hinges, rim, under-rim, bowl walls, cistern, base and exterior. Cover the area properly rather than spotting it.

2

Let the foam dwell. A few minutes. The foam clings to the vertical bowl wall, which is the point of it, and that dwell time is doing most of the work.

3

Scrub, then wipe. Loo Blade around the bowl and up under the rim, where the build-up hides. Damp cloth for the seat, lid and exterior.

4

Flush. Clears the loosened soil and any rinse water out of the bowl.

Seat and lid Rim and under-rim Cistern and base Few minutes dwell

What should I use below the waterline?

Below the waterline, use Koh Loo Cleaner Tabs. Spraying a foaming cleaner into standing water dilutes it, so it cannot stay on the staining long enough to do anything. Loo Cleaner Tabs are individually wrapped tablets that sit in the bowl water and dissolve slowly, right where the ring and the mineral staining are. Drop one in, leave it 10 to 15 minutes for light soil or overnight for heavy build-up, scrub with Koh Loo Blade, then flush. Loo Cleaner Tabs are certified by Good Environmental Choice Australia (GECA) and Sensitive Choice approved.

✓ Below the waterline, the tablets do it

Below the waterline, Loo Cleaner Tabs are the purpose-built product. A tablet sits in the water and dissolves slowly, so the product stays where the ring and the mineral staining actually are instead of washing off in the first few seconds.

Drop one in. Leave it 10 to 15 minutes for everyday soil, or overnight if there is a stubborn ring. Scrub with Loo Blade, then flush. Individually wrapped, so there is nothing to measure.

Loo Cleaner Tabs are certified by Good Environmental Choice Australia (GECA) and Sensitive Choice approved by the National Asthma Council Australia.

Works in the water 10 to 15 minutes, or overnight GECA certified Sensitive Choice approved

How do I do a full toilet clean in one go?

For a full toilet clean in one session, drop a Koh Loo Cleaner Tab into the bowl first and let it start working. Spray Koh Bathroom & Shower Cleaner on the seat, lid, rim, under-rim, cistern and exterior. Give both 10 to 15 minutes. Scrub above and below the waterline with Koh Loo Blade, wipe the seat, lid and outside with a damp cloth, then flush. One pass, both zones, no waiting around twice.

✓ Full toilet, one session

1

Drop the tab in first. Loo Cleaner Tab goes in before anything else, so it is already working while you do the rest.

2

Spray everything above the water. Bathroom & Shower Cleaner on the seat, lid, rim, under-rim, cistern, base and exterior.

3

Give it 10 to 15 minutes. Both products are working at once. The tablet below the waterline, the foam clinging above it. Go and do something else.

4

Scrub both zones. Loo Blade handles above and below without swapping tools. Damp cloth for the seat, lid and exterior.

5

Flush. Done.

Tab first Spray second 10 to 15 minutes Scrub both zones

Do either of these disinfect the toilet?

Both are cleaners rather than disinfectants. What Koh Bathroom & Shower Cleaner and Koh Loo Cleaner Tabs do is physically lift and remove soil, body oils, mineral staining, the ring at the waterline and the residue that odour comes from, so the toilet is genuinely clean rather than masked. If your household needs a registered disinfectant for a specific reason, use one that is registered for that purpose and follow its label.

⚠ Cleaning rather than disinfecting

Neither Bathroom & Shower Cleaner nor Loo Cleaner Tabs is a disinfectant. What they do is remove things. Soil, body oils, mineral staining, the ring at the waterline and the residue the smell is coming from. That is a cleaning job, and it is the one they are built for.

If your household needs a registered disinfectant for a particular reason, use a product registered for that purpose and follow its label.

Lifts and removes soil Body oils and mineral staining The ring at the waterline

Koh Bathroom and Shower Cleaner refill

Bathroom & Shower Cleaner · above the waterline

GECA certified, Sensitive Choice approved, Dermatest tested, Eczema Association of Australasia recognised. 12 ingredients, mildly alkaline, made in Australia.

Koh Loo Cleaner Tabs

Loo Cleaner Tabs · below the waterline

GECA certified, Sensitive Choice approved. Individually wrapped tablets that dissolve in the bowl water, where a spray cleaner dilutes away.

Koh Loo Blade with ceramic storage pot

Loo Blade · the scrubbing tool

A flexible TPE blade with a handmade ceramic pot for storage. Reaches under the rim, and works above and below the waterline without swapping tools.

Browse all Bathroom & Shower Cleaner articles

Browse all Loo Cleaner Tabs articles

Last reviewed: September 2026 · Koh Australia

koh bathroom cleaner toilet bowl, can i use koh bathroom cleaner on the toilet, can i use koh bathroom cleaner in the toilet bowl, koh bathroom cleaner toilet, koh bsc toilet, koh bsc toilet bowl, how do i clean my toilet with koh, koh toilet cleaning, koh full toilet clean, what koh products clean a toilet, koh bathroom cleaner above the waterline, koh bathroom cleaner below the waterline, what should i use below the toilet waterline, can i spray koh bathroom cleaner into the toilet water, why doesn't koh bathroom cleaner work in the toilet water, koh bathroom cleaner toilet seat, koh bathroom cleaner toilet lid, koh bathroom cleaner toilet rim, koh bathroom cleaner under the rim, koh bathroom cleaner toilet cistern, koh bathroom cleaner toilet exterior, koh bathroom cleaner toilet base, koh bathroom cleaner outside of toilet, koh bathroom cleaner ph, koh bathroom cleaner mildly alkaline, koh bathroom cleaner 12 ingredients, koh bathroom cleaner ingredients, koh bathroom cleaner geca, koh bathroom cleaner sensitive choice, koh bathroom cleaner dermatest, koh bathroom cleaner eczema association of australasia, koh bathroom cleaner made in australia, koh loo cleaner tabs, koh loo cleaner tablets, koh toilet tablets, how long do koh loo cleaner tabs take, can i leave koh loo cleaner tabs overnight, koh loo cleaner tabs geca, are koh loo cleaner tabs geca certified, koh loo cleaner tabs sensitive choice, koh loo cleaner tabs toilet ring, koh toilet ring at the waterline, koh toilet limescale, koh toilet mineral staining, koh toilet stain below waterline, koh loo blade, koh loo blade toilet brush, koh loo blade sanitise, koh toilet brush alternative, koh loo blade under the rim, koh loo blade ceramic pot, does koh bathroom cleaner disinfect, is koh bathroom cleaner a disinfectant, does koh bathroom cleaner disinfect the toilet, are koh loo cleaner tabs a disinfectant, do koh loo cleaner tabs disinfect, is koh loo cleaner tabs tga registered, does koh disinfect the toilet, koh toilet smell, koh toilet odour, why does my toilet still smell after cleaning, koh bathroom cleaner and loo cleaner tabs together, koh bsc loo blade, koh bsc loo cleaner tabs

Was this article helpful?
Yes
No