The Mentalist - 2008 Jolly Red Elf 3-10 is rated/received certificates of:
Netherlands:12
The rating of a television show can refer to two different things--its Nielson rating, meaning how popular it is, and its content rating, which refers to how mature the show is. Unfortunately, both of these ratings change from one episode to another, so there is no blanket statement for either rating regarding The Mentalist as a whole.
Novel - 2008 is rated/received certificates of: India:U
The Matador - 2008 is rated/received certificates of: Australia:PG
Souryam - 2008 is rated/received certificates of: India:U/A
Mukhbiir - 2008 is rated/received certificates of: India:A
The Mentalist - 2008 Bloodhounds 3-12 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Redline 2-13 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 The Redshirt 4-9 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Pilot 1-1 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Bloodshot 1-16 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Bloodstream 3-17 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Bloodsport 3-11 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Redacted 3-20 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 Red Alert 3-13 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 The Crimson Hat 4-24 is rated/received certificates of: Netherlands:12
The Mentalist - 2008 White Lines 6-11 is rated/received certificates of: USA:TV-14
The Mentalist - 2008 Cherry Picked 5-6 is rated/received certificates of: Netherlands:12