What is this stain?

Hi everyone,

Having trouble understanding why the concrete is dirty but is perfectly clean in these specific spots?

Looks like a bleach stain :smile:

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What’s weird is the holes are still dirty.

Ask the customer… Regardless they desperately need their concrete cleaned which might just about even it out.

That looks like tire shine. Is that the same spot he parks his.car

This is my driveway I’ve lived here 3 years. Never spilled anything as such. Maybe it’s been there awhile. (Also sold the house cleaning to my landlord. Will be doing once I get my setup).

I keep hearing about tire shine. Must be a crazy chemical?

Tire shine is a sealant

Chuck Norris spat on it. Put a surface cleaner to it and call it a day.