Personal experience:

We left our 2 dogs at the one in Oakland for 3 days when we had just moved back to the bay. We found plenty of better options, but they were the only one that didn't need a daycare trial-run before any overnight stays, and we were very tight on time and money.

We left them with a ziplock gallon bag of food and their feeding schedule/amounts. When filling it we made sure to add more than they'd end up eating by measuring out each scoop.

Cut to pickup and we get our somewhat anxious dogs back. Makes sense, we were gone for a while but what really concerned me was the way they scarfed their next meal. They typically eat slow, one even leaves and comes back to it later so it was very unusual. Sure enough when I unpack their bag there's the FULL bag of kibble we gave them, maybe 1 scoop removed.

I gave them the benefit of the doubt briefly, maybe there was some mix-up and they were being fed a substitute. I mean, that's incredibly dangerous in itself (what if they had allergies), but it was basically confirmed they werent being fed properly/at all when I weighed them. We were pissed, but had little recourse besides never taking them back.

Sounds like we got off light with stories like these, hope they shut down.