I have had this item for 3 months now and have had no issues.The shipping box was huge, like 3ft tall, but it’s not very heavy.It comes with plenty of bags. I use one every 4-5 days for my 2 adult cats.The outlet plug only takes up half the outlet so something else can be plugged in. I liked that it didn’t hog the entire outlet.I ended up plugging a WiFi range extender into the other half of that outlet.This robot is quiet. I sleep across the hall from it (doors to the rooms open) and have never heard it.I read that the little plate at the bottom of the round entry opening can come off if the cats don’t like it. I didn’t remove mine.You have to press the button on it and cycle it once when you first plug it in.You have to do the initial set up in the phone app. After it is set up it will work without it being on the WiFi, so if the connection drops temporarily, it’s no big deal. Your phone is like the control menu.There are buttons on it to make it clean. There’s not a screen on it so the phone is needed for the menus and to get to the settings.My connection had been going in and out where my WiFi router was so far away, it wasn’t a problem, but I did get a WiFi range extender and it has since not lost connection.The phone alerts you when the bag is full but the indicator on it will also.To set it up, you need to have knowledge of using phone apps and connecting to wifi.** when setting it up, It attempts a Bluetooth connection at first and for me, that failed, but it was okay. I followed the prompts for “manual connection” and it went on through the set up.WiFi set up was easy. ** It will be easy if you follow all the instructions. My signal was very weak in that room. I only got about 6mb on an internet speed test using my phone. It did take me 3 tries because of that weak signal.*** During WiFi connection, if you see a lock light up, no worries. Those 2 buttons lock and unlock the control panel (I guess to keep kids from pushing buttons on it) as well as do the wifi connection. Pushing them again makes the lock go away.It took approximately 5-1/2 lbs of litter to reach the max line. I think I need the entire max for my 2 cats because one is a big guy.If you go past the max line when filling it just gets wasted. You have to cycle after filling and I saw where a lot of mine went in the waste bag where I overfilled it. I put that back in my litter supply. So don’t go over the max.There are 2 settings menus- profile> settings where you set units to lbs and farenheit. There’s the settings under the cat box device (three dots). I posted the list of what all is in there.TIP: If you set it to automatic cleaning, if you set it for 15 min after the cat leaves, the poo is more firm and won’t end up sticking to anything.There is a way to calibrate the weight under device settings > more settings. I did it upon setup with 4 cans of soda.When I first got it, I took their old cat boxes away and put this one near where those were. I put a short step stool up against it but when my cats got used to it, I took the stool away. The first day, one of my cats showed interest in it and snooped around in it. The other one was grumpy, he didn’t like me bothering him when I showed it to him. I scratched their paws in it. They knew where it was and went to it when they had to go. It took about 6 hours.It saves money on litter and significantly keeps the dust down. I get the case of FS cat litter that has 4 smaller bags. I have used 2-1/2 cases of that.