
I only drained mine, from outside. Never from inside. As for groomers doing this, when allowed, it's better to have a vet do this so he can see what the consistency is, and treat as necessary. I only touched mine if I noticed an aroma, or saw a 'bulge' going on. And as said, even if manually drained, they will refill so if the cause isn't treated, this will be an ongoing problem. Along with all his other problems, I was never able to do this with my last Basset (from outside) if obviously needed, and I was told his glands were set quite far back, so even with a good quality stool, it didn't always manage to hit the glands (apparently). Although at one point, I was making several trips to the vet for that, with him, eventually it all calmed down.