clean asphalt?

they sell stuff to take grout haze off tiles. phospheric acid i believe. you could first try with a weaker acid, like vinegar and a stiff scrub brush.

Thanks

I'll try some vinegar and let U know...............

May take a long time but rain should help with time. If it's a year old, I'd consider sealing it which is something you will probably do anyway.

Right.

It's only a month old now.

Thanks

Duke

Power washer , maybe ?? I'd seal it before winter..My dad sealed his per recomendation of the asphalt guy last year before winter...It was done in June , sealed in October....He hired a pro to do it but he is 70...Looks GREAT still....

Muratic acid will eat the concrete. Lowes has it. I would try a small test spot first. Rinse it off well afterwards.

I was recalling time neighbor had ducks and they were cute but crapped all over our driveway. Eventually disappeared with time. I think there is a similarity because birds swallow rocks to grind food in thier crop and it probably comes out as inorganic debris needing mechanical removal or washing.

This is the OP. I tried vinegar. It works. I found ordinary laundry bleach works even better.

Thanks for all the interest.

Duke