Dogs in a place that serves food & drink??

I regularly visit Caffè Nero in my local town of Southport, the Lord Street branch is a lovely place to sit with my baby son whilst I work on my laptop. However, I find it most unpleasant to witness the amount of dogs brought into the cafe, it's just not hygenic, I've even resorted to wiping down the furniture with antibacterial wipes after witnessing two dogs sitting on the sofa with their owners. Would it be so much to ask to request owners keep their dogs outside?
Only yesterday I was in the aforementioned branch of Nero when a couple entered the shop with a very large dog which immediately went straight for my 4 month old son sitting in his pram! I'm sure the dog was only curious but naturally I was alarmed.