By the makers’ own figures: litter boxes from under 20 dB to 50 dB, clippers from under 49 dB to 55 dB, and grooming vacuums from 60 to 75 dB — all measured by each brand its own way.
Noise is the specification most likely to be published without a method, and the one that decides acceptance.
What the numbers say
Litter boxes are the quietest class here and grooming vacuums the loudest. That is physics: one turns a drum slowly, the other runs a vacuum motor.
How to read them
As an ordering within a family, not as measurements across families. A 30 dB spread between quoted figures is meaningful; a 3 dB difference between brands is noise about noise.
What matters more than the figure
When the machine runs. A litter box cycling at three in the morning wakes a household whatever its rating, and most machines let you set quiet hours.
For the animal
It is not the level, it is the surprise. A delay before the cycle, and an introduction that lets the animal hear the machine before it touches them, does more than any decibel.
This does not replace your device’s manual. Blade temperatures, locking mechanisms and cleaning procedures differ from model to model, and the manufacturer’s instructions take precedence over anything written here. Unplug a device before dismantling it, check a hot blade or an air nozzle against your own hand before it goes anywhere near an animal, and keep a mechanism that closes or rotates under supervision until you know how it behaves.
Last reviewed 2026-08-17