Cement powder with plenty of Kerosene or Jet A1 (Jet Fuel)
Leave it overnight. If that doesn't work nothing else will.
Printable View
Cement powder with plenty of Kerosene or Jet A1 (Jet Fuel)
Leave it overnight. If that doesn't work nothing else will.
I used pool chlorine....just the powder stuff. Make the stain damp (NOT wet!) sprinkle it on, wash off the next day.....if anything, the stain is white instead of grey lol
Sea salt (or butchers salt)also does a fair job and is not toxic to the pets, just use it the same way but leave in place for longer...maybe 3 days.
When the sewer line under the carport blocked the concrete was cleaned very well when the washing machine waste water split over - Omo. Try same with warm water for better penetration. Any petroleum based solvent will move the stain deeper/wider which may make it less obvious.
Why not use a strong salt (NaCl) solution in the first place? You are just making it on the spot! :DQuote:
Originally Posted by Rovernaut
[HCl + Na(OH)2 = NaCl + H2O]
Cheers,
Lionel
do you own a Land Rover...if so dont bother