I can't believe Fitch are still out of stock. I am sure it will be back to normal by February - must be supply and demand at this time of year with Christmas aftershock etc
I was going to say Finacard! Hypoallergenic (just in case) but on looking at their website they say it is no longer available and they now use Softacard (which I believe has been approved of on here recently). Soft cardboard, almost paper.
Would suggest a bale of that (£17.50) and a bag of Kaytee Clean and Cozy - mixedin at one end/small area, to give a bit of variety.
https://www.finacard.co.uk/index.php...h33gogad07udi5
I have used Finacard and still have some - I occasionally mix it in with Fitch - the softacard is supposed to be better I believe.