How to get rid of this on gates?

A power hose will remove it without the use of any chemicals.

Local hardware store will have algae remover

We use Patio Magic on everything here, it kill algae on walls slates gates and, of course patios

i use the power washer to spray it on the house walls and roof and can do it all standing at ground level.

Just spray it on and the weather does the rest, I was even advised yesterday to use it on the canopy on the boat

So your essentially saying don’t use one sh1te chemical use another?

Elbow grease, if it is non toxic it sounds like great stuff any link to it?

Lolled hard.

This made me laugh 🤣

An old saying "use an ounce of elbow grease".

Chloras should not be used on galvanise or zinc.

Yea. Elbow grease is a pretty common expression

Didn't know it was actually a product, but hardly surprising either i suppose.

A few years ago, evostik rebranded a silicone adhesive. Not rembering the name, Tradesmen would go to the counter looking for the adhesive that "sticks like sh*t". So evostik rebranded it and called it..

You'd need a cert showing you completed training day for sure, H & S statement update stating how much you planned on using, hardly qualify for a grant?

I've an ifor Williams trailer and the shine is well gone off it.

Any ideas?

I seen older ones for sale and they are well polished up