My 7 and 2 year olds love this show. I do not know why it is rated "iffy" for 2 year olds except that they may not understand the all of the content. That may make it a waste of time that could be better spent reading or doing something else, but it does not make it "iffy". It is never scary, violent, or inappropriate. It is s a show that these two age groups can enjoy together and you can feel good about having them watch. If you are going to allow your children to watch tv this is a great choice!

My kids love the show - they're 3 & 5 - I'm not crazy about one of the character's voices (like fingernails on a chalkboard to me!) but I've watched it and it's a good, solid, educational show focused on science and doing good by helping others

This show goes over a lot of stuff that the kids learn in school and reinforces it through a fun cartoon program. My kids are hooked watching this show and learn a lot from it!

One of the few truly good shows on TV for kids. Combines some humor, education, teamwork and adventure into a nice 20 minute break for Mom and Dad we dont feel is melting their brains. Some super minor name calling by antagonist (duncebucket most often) that you may want to address with your kids. Otherwise, good to go.