I have an elderly cat that is not grooming as much as she needs too. We have moved to daily brushing and monthly baths. This helped for a year, but now it isn't. She has very long fur and it getting hairballs and mats. She lets me vacuum her with an attachment, so I think I could clip her to a number 6 height. It would be stressful for her to visit a groomer, so I'd rather just buy clippers and do it myself. I'm not too concerned if she looks good, I just want her to be able to feel more comfortable.