Bests & Worsts Reviews from Amazon

I've never owned one of these devices before and bought this one on SHARK's reputation. This little machine completely exceeded my expectations. We were amazed at the amount of dust and dirt it found in a "clean" house. But we have returned it; and, plan to replace it, possibly with another brand, because we love the cleaning job it did. PROBLEM: If you buy this machine be careful of the online technology. This robot depends on an internet connection to operate as advertised. No internet connection and you have no cleaning schedule...it's just a vacuum sweeper with an on-off switch. SHARK has problems either with the robot itself or the phone app that it takes to make it work (there is no remote). The two will not stay connected to each other. For me the bot would not stay wifi connected for more than two days at a time. And trying to reconnect it using SHARK's instructions was a waste of time. Brand new the Bot would not wifi pair but after a call to SHARK support they were able to make it work. In retrospect SHARK support should have manned up and had the Bot returned immediately. In total, I called SHARK robot support three different times in a two week period trying to secure a fix. If you call the support, plan to wait 15 to 60 minutes to get to a human responder (3 experiences). Try telling the support team the wifi is not working and they will act amazed and then ask you back in a very pleasant voice at least 6-8 times during the next 20 minute conversation if you are sure the wifi is not working! The whole time they are busy clacking away on the keys but will not tell you what the problem might be. On the last call, the support tech admitted it was beyond his expertise and scheduled a call back from a more senior person but he would not commit to a guaranteed call back time so I could be there to answer. Even worse they gave themselves more than 24 hours to call me back as late as 10PM. I finally agreed because I've got this dead robot laying on the floor but the caller id later showed SHARK support never called and no one left a message so RETURN TIME! Sharks's choice. Bottom line is...I returned the defective product and opted for a $$ refund rather than a replacement. No where did the return policy say they would send a new device and I was not interested in having my defective device replaced with a refurb problem child.