Try rolling some cheese 
Ironically, Cheese doesnt like cheese

Doc LOVES it though, he goes wild pawing at empty mini cheddars bags

that is a good idea for him (not only does he look like Max but they have the same food tastes!)

I had to give Gerti her worming tablets last night (4 of them! thought that was a bit mad!)

I had to put them down her throat - felt so bad

will defo try the cheese thing with her next time - not sure if she likes it but theres not much Gerti doesnt like!