He never sprays or goes anywhere but his box but he favors one corner of the box and because he doesn’t bother to squat it just shoots straight back (above the high wall of the box) and goes down whatever is behind the box. We have tried several different boxes as high as we can get the back wall. Unfortunately he’s a very tall cat… We have also tried covered boxes. Although they contain the pee he is not a fan of that style of box. Currently we have plastic taped to the back of the box and on the wall trying to help the urine run right back into the box. Anyone had this problem and found a better way to contain the pee?