[cohen]

So customer wants this cleaning..fat spots and bird poo with red berrys in..looks to have seeped right in

[Smudger]

you will need steam to remove

good luck with the oil - they should have got it sealed before playing with the BBQ

Oxalic acid - and prey

or F9 Barc - if you can get it

Darran

[Splash & dash]

you will need steam to remove

good luck with the oil - they should have got it sealed before playing with the BBQ

Oxalic acid - and prey

or F9 Barc - if you can get it

Darran

We have tons of granite down hear and generally don’t find oil and grease  mark it Evan if it’s not sealed .

[Russel kirk]

A decent stripper should be fine. I use one called Carefree Speed stripper and just removed a bunch of oil from from slate with it the other day. If needed then steam is good but for me was a case of just leaving it to work, agitating a bit. Rinse and repeat. 

The nice thing about granite is that you can hammer it with any chemical or pressure you want. I once removed limescale from granite with my pressure washer on the pencil jet setting, and it didnt effect the granite at all.