For the groomers out there.... can you tell me if there if you can "check" the anal glands without actually "expressing" them? I am asking because at Petco, where I take Lily to be groomed, it says on their website, that 'checking' anal glands is INCLUDED in a "full groom".... yet they charge me $10 for expressing them. Is there a way to "check" to see if these glands need to be emptied? If so, I would like to know myself, so 'I' can check, if it is not too difficult. And if not, I would like to know why they are charging me extra? Thanks for any replies.