What is the best way to clean concrete?

Question

poured a bottle of amonnia down to clean it now the amonia smell wont go away any suggestions?

Answer 1

if its outside pressure wash it

Answer 2

TSP, water, and a scrub brush

Answer 3

Boric Acid is often times sold in hardware and it'll clean the stripes off of a zebra and concrete. Just be sure to be aware there will be harmful fumes, so no kids needs to be around.

Lightly moisten the surface and sprinkle the boric acid and allow to sit about 10 min for heavy stains, then brush or just rinse.