That's usually a function of the sun's reflected IR being detected as motion. This can be caused by cars or by branches/leaves blowing in the wind, causing the reflection to move. Lowering the motion sensitivity during the day and/or repositioning the camera so those items aren't in view are the first steps.
If I lower the motion detection, will "people" still show up? That's my concern. I don't remember my cameras doing this last year, so you're probably right about how I have them placed. Thank you for your answer.
If I lower the motion detection, will "people" still show up? That's my concern.
There is a balance between reducing unwanted recordings and getting all the recordings you do want. So you don't want to set the motion detection too low.
If the issue is managing notifications/recordings (and not battery life), then a paid subscription lets you use cloud activity zones and smart notifications, which can also help.
I've never looked into a subscription. I always thought Arlo was just free. How do I go about looking into it?
The subscription options are outlined here: https://kb.arlo.com/88/What-are-the-available-Arlo-subscription-plans-and-how-much-cloud-recording-i...