Best and cheapest industrial strength toilet cleaner?

[TalkToTheHand123]

I visit a client regularly and the bottom of the toilet is black. I've used lots of toilet cleaner but it doesn't clean. Anyone able to recommend a suitable product?

Harpic, the black one, is very good but for heavy limescale you need to remove most of the water first and ideally leave it for several hours or overnight.

Diet coke

Have you tried a scratchie? I find it's not the cleaning product that helps remove stains, but the hard abrasive rubbing with elbow grease.

Citric acid

https://www.bbc.co.uk/programmes/articles/5vvp6J4cN4X6T527p4HJv8k/nancys-green-cleaning-tips - this is a recipe for toilet cleaner using citric acid

If there’s a lot of build-up at the bottom of the bowl then that needs to be broken down - Harpic Power Plus tablets are good for this though should ideally be left in for 12 hours so it’s something you’d have to ask client to do overnight before you arrive. You can then use an abrasive sponge to manually clean.

I use the Ecover Power toilet cleaner day to day and it works really well. Do you know what client does cleaning wise in between your visits? If they squirt some cleaner around the bowl and rim every other day or so it helps stop limescale and grot building up.

I had some stubborn stains that had built up in mine, and saw that if you use a toilet brush you can kind of pump most of the water out of the bowl. Then use lots of whatever cleaner (I used Harpic Black as reccomended above), leave it for a good few hours, then give it a really good flush. Worked like magic even when the same cleaner hadn't really done anything without taking the water out!

I'm never one to advocate bleach down the toilet, but I bought some HG mould remover last week for the bathroom walls etc and was so impressed, I aimed a quick spray down the toilet and left it for half an hour or so. It gleamed.

I usually use washing up liquid or hand soap or whatever is to hand, and occasional steradent overnight, but I bought a bottle of Astonish toilet gel, good stuff but probably not for really bad stains.

I don't use bleach etc because we have our own septic system and need to be careful of what goes into it, we need the bacteria (actually started adding a bacteria supplement when we had issues with it which worked wonders) and our water (own well) is very hard with a lot of lime so I use a pumice stone to remove any limescale build up, it works without scratching the toilet. Stick on a pair of rubber gloves and get scrubbing.

Because of my allergies I prefer to use unfragranced thin bleach, which I can no longer find in the shops.

So I buy this instead: https://www.amazon.co.uk/dp/B00COM84IM?ref=ppx_pop_mob_ap_share

It is unfragranced thin bleach at about 4x concentration of the stuff I used to buy in the supermarket. I dilute it for household use, except in the toilet. If the toilet starts looking manky I lob a bit in. About a cupful, but I don’t measure. The bleach is so strong that even an hour soak is usually enough. It won’t get rid of limescale (we have a water softener, so limescale is never a problem for us.)