I find it is worth redoing over and over, of course, every time I do, they change it a bit. Although, being honest, I do find it is getting more and more disturbing. Last year when I took it, I didn't sleep right for a week. They felt it was necessary to play a 911 recording of someone's last breaths. It was so awful.

In Que, the standard is now an 8 hour course, designed for childcare workers with a unit on allergies and Epi-Pen. It must be done every 3 years.