OK, I'm not disagreeing with the other posts because they are right, you are paying to have your most prescious child cared for in a loving, sanitary and human way, expecting them to be clean and well cared for is not too much.
That being said, I would have researched centers before i placed my child initially. Are there other options in your area?? Have you recently checked them out?? Are they any better?? I would hate for you to threaten to pull him and not have another Better option set up. Especially since there are often waiting lists for the young ages.
In your situation, in-home care might be the best. In Pa, the state allows daycares to have 6 one year olds per adult. Infants are only 4 per adult. When you transitioned him, i'm sure you noticed how much busier the one year old room is, they are mobile, non-verbal for the most part, still in diapers, and BUSY, BUSY, BUSY. Ones and Two's are really really tough ages for daycare, they have their own individual needs and don't fit into the "daily schedule" of events as nicely as older children or infants do.
If you have concerns, pop in for 15 mins during the day, or have a family member do it. don't let your son see you but, check out what his over all day is like. Often times, the regular staff that spends the majority of the day with your son, goes home at the end of their shift and a "fill in" is with the children for the last half hour or so before pick up. Perhaps his nose has been wiped constantly for 8hours and now for the last 30 mins the fill in staff has let it go, because she' trying to entertain, cranky kids and speak to parents as she releases them.
If you have already talked to the director about a special snack, I would start with addressing the nose wiping directly with the staff, and if there are different teachers there during pick up than drop off, YOu have to address it with all of them too. If there is any hint of an eyeroll, or a too bad lady, instead of an " I"m so sorry we certainly try our best, I'll do what ever i can to make sure it doesn't happen again" Then I would go right to the director, because maybe that staff person shouldn't be working in that room. But at that point be prepared to remove your child.
I hope you find something great. Oh you could always call their liscenceing agent and complain to DPW.