not every commercial powder out there is good. Check the labels and find one that lists roughly a 1:3 ratio. Personally, I just keep pure calcium available constantly, and dust food items with herptivite as needed (depending on the age of the leo)
-----

1.0 Hypo stripe, Het RW from JL (BJ)
1.0 HypoTang from Crested (Apricot)
1.0 Tremper Albino from Petsmart (Cloud)
0.1 Hi-Yellow Leopard gecko from Petco (Beatrice)
0.1 Stripe female (rehabilitated rescue)(Pepper)
0.1 Jungle het RW hatched by me! (Jungle Bunny)
0.1 SHCT Leopard Gecko from Petco (Brite)
0.1 Tangy Mutt Leopard Gecko from Petco (Rainbow)
0.1 RW Stripe hatched by me! (unnamed yet)
0.1 Leucistic rescue (Lucy?)
0.1 Tremper stripe from JMG (Delta)
0.1 SHCT hatched by me! (Blinky)
0.0.1 SHCTB hatched by me! (Sunny II)
0.1 Ball Pythons
1.0 Brazilian Rainbow Boa
Hatched: ~50 leos