DIATOM BLOCKS
2 sizes 
Cage Blocks – with  twist tie -  45 grams approx ea
Aviary Blocks - NO TIES -  300 grams approx ea
(calculate the weight of your order per block - to purchase the correct post bag - along with your other products purchased) 
 
Contains:
Fossil shell flour / grits/ calcium/ iodine  + more.

Dosage;
Small - tie onto cages or small aviaries.
Large -  ideal for open cage breeding or weaning cages (birds play with them) as well as getting the benefits of digesting the blocks.