Vitakraft Vita verde hay bales

[emmalala]

Does anyone use these at all?
http://www.ebay.co.uk/itm/Vitakraft...et_Supplies_Small_Animals&hash=item1e5d823b0c
My local petstore has them for sale for £5 so I bought a bag. They love it! But I'm unsure as to how often to feed it to them? It has herbs and other bits in it

 

[Midge&Panda]

Our local pet shop sells a smaller bag for £2.99. The girls have tried both, they do like it but not as much as plain timothy hay.