Help removing grease/fat stains from patio?!

[arknor]

depending on what colour the tiles are bleach could make a worse stain?

if it gets absorbed into a porous surface that bleach is never coming out

 

[Blackjack Davy]

I imagine something like that wouldn't be too friendly to lawns? Id love to use something stronger just to clean them up in general but the run off into my lawn would concern me.

It isn't nor to the wildlife either.

 

[SpeedFreak]

I've had success with talc before.