They should be licensed in the state you live in and the license should be post where you can see them and a picture of the person preforming the treatment.
The best method is an autoclave. The state of Florida does not require this but, this is the best method to keep you safe.
In Florida is soaking the instruments in a disinfectant meets requirement of sanitation and the instruments in soak for the amount of time that is on the disinfectant bottle.
It is very important to look over the feet and calves, to ensure there is no broken skin, open cuts or infections. I will not perform nail care on a client that has any open cuts or infections. You should never allow anyone to do this as it could lead to a serious infection for the client. I also keep extensive notes upon each visit and take pictures to chart your progress.
This is important because if you have any health concerns like diabetic, heart condition, skin issues the person that you are seeing has no idea about what care needs to be taken for you.
Because if they don’t do it for you then the person that was seen before you may have something that could cause you a problem. And especially if the best sterilization is not in place.
There should be not cutting of the cuticles, pushing back only. Cutting of the nails, shaping of the nails, light exfoliation if there is no contraindication for that.