I use a rechargeable Wahl Arco clipper to do the sanitary trims (poopie hole
& wee wee areas). Also the under paw pads, underbelly & inner thighs.
I have this one but in Pink, it's very quiet. It comes w/xtra rechargeable batteries & detachable combs. Linked this site bc it was the best price I found on google.
WahlŽ Arco Cordless Rechargeable Clipper in Dog Grooming Clippers at Schneider Saddlery