I haven't ever used one. But, I've only been in a hotel once since the kids were born and it was just DS then, lol. I doubt I would use one for quite a while, but that's not because I don't trust them or think they would do a bad job, it's more because I suffer separation anxiety and have only ever left my kids with my parents twice and another family member once. It took me over 2 years before I let my Mum babysit, lol!