When you move the ChomChom back and forth, an electrostatic charge is created that helps to lift and draw the hair towards it. Once it captures, the hair is stored in a container that can easily be disposed of by flipping open the lid and dumping it in the trash.
A lint roller with sticky tape doesn’t have the strength that the electrostatic charge has, and the tape will get filled up quicker, causing you to have to continually remove the outer layer. A lint roller pales compared to these nifty cleaning gadgets in ease of use and ability to grab the most stubborn hairs out of your clothing and furniture.