I remember reading that some of you will use 1-2 gallons for each 1K sq st . If you have a rock landscape where the rock maybe 2-3 inches deep , do you still apply a prem using 1-2 gallons of water per 1K sq ft . If so , the prem just lays on top of rock , does not get down to where the weeds grow from , even rain or watering may not get it down far enough to do the best good . Guess I am asking , when you treat rock landscapes , how much water per 1K sq ft when applying prem , like Pendulum ??? Thanks for participating in this thread .