Thanks everyone for your helpful responses and for not rolling your eyes at all. I may eventually try an external track pad but for now I’m going to experiment with getting over myself and cleaning the mouse-sensor more often, with a q-tip AND tweezers. I have three functional “mice” on my desk but I like the blue tooth one best so I hope it will respond to the extra attention and improved attitude even if my cat does not. It’s also possible that the problem is more acute in the winter than the summer so we’ll see how that goes. Thanks again Lynne Lynne Rudie Graphic Design See my contact info at: LynneRudie.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.hidden-tech.net/pipermail/hidden-discuss/attachments/20190304/99a5ce36/attachment-0001.html>