As a dog trainer these past ten years, I’ve walked a lot of miles with dogs of various shapes and sizes and if they’ve taught me anything it’s that sometimes things need to be peed on twice. If the first squirt doesn’t get it, double back and tag it again.
Then there are times when just going through the motions of lifting the hind leg and squirting nothing, not even the smallest dribble, works just as well as the power shot.
And water. Drink it every chance you get, no matter what the source.