Patio Cleaner - Cost Effective

Please, thank you etc

There is a lot of difference between cleaning a patio and maintaining it clean. Never used bleach but I'm sure it will have some effect. You will need to scrub -so a lot of work involved in that route. Power washing is very effective at removing a lot (sometimes the grout or whatever you have down if in poorish condition).

I love patio magic for a few reasons, but primarily it's a spray and leave it - no scrubbing, brushing or rinsing. A very easy solution if that's important. It really does kill green mold and algae and appears to continue to keep it at bay, better than nothing at all. My steps/patio/paths come up as new when I use it (twice a year). By doing this it never gets anywhere near as bad as one left unmaintained. I'm sure bleach won't be as effective (although I'm sure with agitation it will improve it) with those types of patio issues.

It's a balance of work/effort and money - the choice is yours.

Bear in mind also the type of stone your patio has. Some cleaners could ruin it. If you're not sure then a jet wash with plain water is safest.

We always use a jet washer. It has always removed any staining & black & white organic growths just using water & no detergents at all. They come up brand new.

Once every two to three years is fine. Just get close up on the stubborn bits the first time you do it. . (edited)

Wet & forget.

Thanks. There’s also another brand that I’ve seen called Patio Black Spot Remover, which also seems very good

I'm trying to clean mine - have jet washed it and then tried thin bleach, the bleach did nothing at all on the black spots, so I need something a lot more hardcore for them

2 years ago I power washed my part of the alley. Now I just keep it clean with a bimonthly mist of 20:1 mix of water & Lidl thick bleach that I spray from a 5 litre pump sprayer.
(edited)

Washing machine powder, scrubbing brush, kneeling matter, rubber gloves and a watering can.