Washington, Apr 29 : Pop diva Madonna has implemented very strict rules in her house, which ensures that her kids don't watch television or eat candy.
Madge has three children, 11-year-old Lourdes from her ex-boyfriend Carlos Leon, 7-year-old Rocco with her husband Guy Ritchie and their adopted son 2-year-old David Banda.
She insists that discipline is a very important part of a child's upbringing, to form their all round development.
"I'm a tough mother. Children need limits, otherwise they go off the rails," Contactmusic quoted her as saying.
"I don't think that it harms children if their parents are always questioning the society in which we live," she added.
Madge has recently revealed that she is looking forward to going in for another adoption.
The singer says that she would like to try Cambodia and the Palestinian territories next.