F77 dpm leak

I put f77 liquid dpm on a hallway floor with a newly installed front door, only for the customer to send me a photo of the dpm leaking out from underneath where the door fitter had not sealed it. Any advice on how to clean it up off the outside step once it has cured???

 

Is it on brick / stone / plastic ?

 

Stone, terrazzo looking

 

Try a blade scraper 1st. Should get the heavy off. Then some heavy duty wonder wipes , if no job a small amount of brick acid.

 

That was what I was thinking, but wanted to see if anyone else had any tips or tricks. Thanks

 

Isopropyl alcohol may help dissolve any residue