This is my first robot vacuum, so there was a little learning involved on my part. First, you have to prepare the room the way the instructions explain. Get all the little stuff … wires and cables, toys and shoes … picked up. Any fringe on rugs has to be turned under or the vac will try to suck it up and stop. It’s just like with an upright vac, if there’s loose stuff laying around, it will try to swallow it. Also, if you want to clean under a table, the chairs need to be up and out of the way to make room. In other words, just like cleaning with any vacuum, you have to move things out of the way to clean. I know this rubs some the wrong way, but READ THE INSTRUCTIONS and watch the videos online. They will save you some frustration.
With that said, let’s talk about using the Neato D4. First, set the charging base in an appropriate location and place the unit against it to charge. My unit was mostly charged out of the box, and this didn’t take long. Startup and pairing is next. This took me a couple of attempts, but I may have been too impatient. You need to have the Neato App on your phone or tablet and create a Neato account online. It will also require your WIFI name and login to pair up, go online and communicate with your phone. BTW, you have to give your Botvac a name. Pick a fun one since you can use Alexa to start cleaning. “Alexa, tell Dumbo to start cleaning”. Once this is done, it automatically calls home and registers itself. The D4 can only use the 2.4 GH band.
Now the fun! Hit the start button on the app or unit and watch as it goes about its chore. At first it appears a bit random, but there is a method as it maps your room(s). It works its way around the perimeter by a combination of bumping and laser sensing. Wacky tight spaces makes for an interesting show, but it gets the job done. I believe it breaks the cleaning task up into areas of around 150 sq. ft. max, so you may think it’s not getting the whole room, but be patient. As an area is defined, it starts an orderly back and forth path while dodging any objects. (It’s fun to watch it circle table legs without making contact.) When an area is covered, it moves to the next and plots that perimeter. It will eventually get all the contiguous areas cleaned. Also, when it’s done, or when it’s low on battery. It returns to it’s charging station. If there was more to clean, it goes back after charging to finish what was left. Once the floor plan is plotted, Neato remembers it and doesn’t have to bump and grind its way nearly as much.
Things I liked. It doesn’t just aimlessly bounce around like a pinball but sets up a pattern. It really picks up the dirt. It remembers the layout. It’s fairly quiet. You can set cleaning times and days, and let it do its thing.
Things I didn’t care for. As an entry level model it doesn’t have side brushes, so it misses some dirt along walls and in corners. Also, the next model up (D6) can remember multiple floor plans, and I have a two story house. It’s rated at up to 75 min of cleaning, but my results have been less.
Conclusion. A fairly “neato” device, but the base model lacks some features. I live in and old two story house with lots of offsets and things to navigate around. If your rooms are more regular and all on one level, this model would be great. Otherwise, consider the additional $200 and get the D6.