Yes, a fecal exam would be good to determine what it has and especially if it has any serious parasites. But that costs money and if you have a lot of animals... I just thought it would be good prevention if I did it yearly myself, without a fecal exam. Better than not taking a herp to a vet at all.
I think it's good practice to do yearly dewormings, especially if one feeds live prey regularly. It's almost gauranteed that a reptile feeding on live prey will have parasites. I have not read any side effects of giving it Pancur or Flagyl once a year.