I fertilize some plants few days/ weeks ago, I can’t remember when? I guess I got some on concrete. Had the big brown rusty looking stains. So I got out the DEPS concrete cleaner. Didn’t work, not even straight out of the bottle. so I had some CLR, again scrubbed didn’t do nothing. Started looking for product that might work. Didn’t want to spend 18 bucks for 6 once’s or so, plus said you may have to apply couple times.
Had couple old lemons in bottom of fridge. Why not? I cut them in half and scrubbed the dark brown spots. Pressure washed and walla
!!! The spot was completely gone.
So I brought half dozen of lemons for 79 cent piece and removed all the brown rusty spots.
