Hairballs

[Clairiscrazy]

Hiya
ronnie and reggie are now 1 and doing really well i just have one problem hairballs,
i took them the vet because they both were sick and it looked liked a semi solid poo ( so sorry)
anyway had to take evidence to vet and they confirmed its just hairballs better out than in they said,

so what do you all use to brush there fur im combing/brushing them daily how long depends on there mood lol
ive heard of a furminator are these any good? And which size or what is the best brush to use

thank you x