How do you clean garden concrete statues?

Try hot water and dishwashing liquid. When that doesn't work use bleach. When that fails use hydrochloric acid. 40 years go by and now you want clean.

Tiger tiger burning might,
In the backyard: of the blight,
Be the sort of brand to try
To clean thy fearful statuary.

Will give that a try. Thanks.

lol funny

if its a blck mold kind of crud, a power washer at about 2500psi and use a cleaner like "Simple Green". I use thi technique on the patio which is berick in concrete. After I get done with the power washer I spray a 10ppm mix of Chlorine in water hich stifles the mold or algae from growing back for a couple yeares (but Itll be back).

We have several large concrete geese in a row under a small grove of treesand they get green from moss . This was by design. Mrs F cultivated the moss by making a slurry out of some plants in milk and water that she mixed in a mixmaster she got at a yard sale and uses for garden stuff and sheep drench. Then she painted the moss slurry onto the staues . They were kep a it on the moist side for several weeks until the a;gae showed that they "took". Now the geese look like theyve been there for a century. It a look that isnt necessarily to be "cleaned off"

BTW, is your dirt mold or dust or something else?

I'm not a representative for this company or anything but I've used this product for years and recommend it highly:

Wet and Forget

A gentle scrub with a wire brush with dish soap and a bit of bleach.

I used a plastic bristle brush with detergent, and it worked. Thanks for all your suggestions.