I don't know the normal age they start because I haven't started yet, but my advertising will also be 3 months and up, with younger being available on a case by case basis. Right now a friend of mine had her first baby Nov 4 last year so she's not 3 months yet and I love helping out when I get a chance and they let me because they know I'm going into daycare. She's so adorable. For my daycare though, under 3 months will only be if the parent has good reason because I think they should be with their mother for at least 3 months. 6 is better but sometimes they do have to go back to work.