Cleaning diamond painting before sealing?

Hey! I am coming up on completing my first diamond painting soon and wanted to know how you all handle lint and stuff before sealing. No matter how much I protect my canvas, a dog hair always ends up lodged under a drill. 😭 I was thinking of trying a lint roller but some of my drills get loose and I’m too nervous to ruin it.

Also, if some drills aren’t totally flush against the canvas and I still seal it, will they eventually come off? I’m new and have been having spacing issues haha. TIA!