I run my robot vacuum cleaner each day to chance up sand plus dust that gets brought into the lake house from unknown sources. Well, really the sources are pretty known because it is only I who is coming plus going each day from the flat. My cats both live indoors full time so they aren’t bringing in any dirt. I have a HEPA filter on the robot plus it picks up all of the sand plus dust that my central Heating plus A/C program would normally be grabbing, so I end up not needing to scrub the filter in the main unit that often. I looked at the filter the other day, after many months of not checking it, plus it was still perfectly clean. I think I could fill up a small waste can in a month with all of the stuff that the robot picks up from the floors. It’s particularly amazing how much dirt gets into a lake house that is closed up with a temperature control program running each day to keep the air clean. I bet in a year you could fill up a bathtub with all of the things that accumulate in the lake house over that period. Imagine breathing in all of that stuff if you didn’t have an Heating plus A/C program or HEPA filtered robot to keep the lake house clean. I need to ask Google how all of that debris gets into a lake house that is totally closed up. Maybe it comes in on my clothes plus my body, not to mention my bike. Be kind to yourself this week.