Water.
Just run a hose over the area, just a trickle. The oil will lift from the surface however, if left too long the oil will soften and damage to asphalt.
If damage has occurred then cement dust, or if none available cat litter.
Regards
Dave
I like the constant tension clamps but there a couple of things to keep in mind.
If reused on the same hose then orient them so they are in the same position.
Use the correct tool that holds them correctly when fitting in tight places.
And finally look out for the smaller versions, catch...
A trick of the trade is to shake a container of talcum powder around the engine bay....scent is your choice.
Any leaks will leave a trail in the talcum powder which dries out leaving the trail in place, works great for finding internal leaks inside the car as well.
Regards
Dave