When NOT to vacuum is the question at my house. LOL. We have tan carpet throughout most of the house, and I vacuum pretty much every 1-2 days (I have 3 little 2-legged crumbsnatchers in addition to my GSD). However, we have brand-new cream colored carpet in the master BR, and that's where Kodee sleeps at night. He has a sheepskin bed, and he sleeps on that about 1/2 the time. The other 1/2 the time he sleeps on the carpet or tile next to the doors out to the deck.
I clean the BR carpet
every day when I make my bed. Use a slicker brush to get up most of the hair, then vacuum...
The things we do for love