hello,,,just got a new property and have been jet washing the fences last few days,,,theyve been done in that crap you get from the garden centres,,,is it wax based or something??? comes in green,,,dark brown,,,etc etc,,,I'm not really a fan of it and would rather use creosote,,,and I was wondering could I put the creosote over it??? or does it have to be more of the same???