Stained block paving - Help

[bungalow]

hi, i am new to this site, i have just had my drive done in red block, my son has stained it with waxing his car. it was something he bought from the motor show some years ago.a wax called M E R from germany.i have removed the main stain with fairy liqiud,but can`t get rid of the main mark on the block`s. there are so many products on the market that i really don`t know what to use, in case i ruin it. also there is a white line around the edges of some of the block`s, my neighbor tell`s me that it`s something to do with the concrete make up of the block. could anyone give me any idea of what to do? thank`s john.

[lutonlagerlout]

the white mark is efflorescence see here
for details
regarding the stains ,it may be easier to replace the stained blocks particularly if its a new drive
LLL

[bungalow]

hi, thank`s lutonlagerlout for your information. if i want to replace the stained block`s, does the drive have to be taken apart? or is there some way of taking the stained individual block`s out. thank`s john.

[Tony McC]

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