Removal of dog's anal glands?

Most little dogs on canned food have to have their glands done every month, if done right it is not painful.The vet is not sticking his finger up her butt, he is squessing the glands. Increase fiber in the way of carrot, sweet potatoes, green beans even unsweetened bran cereal, get her off of canned food and give her things like hard dog biscuits, she also needs more exercise. I bet you have not tried everything and surgery should be a very last resort