Recently treated a new indian sandstone patio with Lithofin Stainstop MN - seems like a great product but in places i've clearly failed to remove all the excess product resulting in some watermarks... (wife's not impressed).

Secondly, even if i had applied 100% evenly the water repellency is actually really annoying. On the hottest day of the year the patio stayed "wet" with droplets of water that I could only brush off. In the past they'd have been absorbed and evaporated in an hour or two in those temperatures.

So, is there any way to remove the Stainstop completely? Embarassed, yes.