Any particular reason you're dead set on pinheads? I used to spawn my own pinheads about 2 years back, and it was an utter headache compared to the other insects I breed for my firebelly toads. A good list would include...
  • Buffalo Worms
  • Confused Rice Beetles
  • Lesser Waxworms
  • Bean Beetles
  • Grain Beetles
  • Springtails
  • Dwarf Isopods
  • Firebrats


I really could be here all day, and every single one of those insects listed on that list are 10 to 100 times easier to reproduce steadily than pinheads. You can get a small list here...
Feeder and Pet Beetles - Small Pet Feeders, LLC (English)

And there are a ton of caresheets for each of these insects here...
Care Sheets - Small Pet Feeders, LLC (English)

Jump on the bandwagon, give pinheads the slip ;-) Hope this helps!

-Dave