About once every 3 weeks. You have to clip their claws when they go to shows or to stud anyway so while it's nice for her claws not to lacerate my flesh when we play, I'm mainly doing it so she's used to it. She hardly notices

Don't have to do the 'bundle in a towel' thing, just lay her back, rub her tummy between clips.
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Lily - silver Egyptian Mau
Jasper - Burmese X moggy - missing!
Electra - silver Egyptian Mau
(
Truffles - chocolate tortie syrian hammy - bye little one, I miss you)
And 6 little balls of silver spotty fluff! OMG KITTENZ etc