Seasons 1-5: safe for anyone!! Season 6 has profanity.
It’s a really wholesome show, but there is the occasional mild profanity throughout seasons 1-5 and God’s name in vain. It’s very infrequent. However, when Netflix bought it, they loosened up. Season 6 has a bit more profanity, including both a written and spoken F-word in 2 episodes. Not sure why they have to ruin a perfect family show!