I was pleasantly surprised by this product. It moves by vibrating and if the cats turn it on its back, it will get back up again. Cats are also very fascinated by it. The toy itself is pretty small, so I have to supervise it so that it doesn't go under the fridge. When it moves, it moves in a slight curve rather than just going straight, which is great since it will go around in a circle rather than just hitting the walls all the time. The cats ripped of the tail the first time they used it, but I tied it back on with dental floss.My cat Sherlock plays with it for a minute before he gets bored. If you don't use this in an empty room on a flat surface floor, it's not going to work very well. Mine constantly gets stuck in the grooves of the wood floor or under cabinets.Bought two. They moved around like little roombas. Within minutes, one went right under the oven and I couldn't get it out. The other went right under the air conditioner, couldn't get it out. Wasted around an hour of my life fashioning various poking devices out of coat hangers and string and chopsticks, but no luck. My cat liked them for the few minutes they were out prior to absconding to the under-appliance world, then sat for hours staring, listening to the fascinating ticking noise the hexbug makes.Probably good if you have a place in your home where it won't get stuck under or behind something. The tub maybe?Battery lasted about a week, and i wish the movement was calmer, because sometimes it overwhelmed my cat. but she still loved to carry him in her mouth when he was off. and for theprice, its not bad.My cats favorite toy, she comes running as soon as I turn it on.... I would add a few things or adapt it more. Does not work on carpet, maybe a thin harder surface one but it still will not work like it should or does on hard flooring. My cat picks it up and carries it around like she is Queen Cersei from GoTOur dog sits and barks at it and follows it around sometimes but wont pick it up!This is definitely one of the best cat toys ever. My cat loves this, unlike the Weasel Ball - see review. I love how bug-like the toy looks, and the random movement. Just know that it won't really work on rugs or carpet. We have wood/bamboo hard floors. My kitty watches it raptly, follows it, grabs it by the poofy tail and flings it around. Hours of entertainment for him, as well as for us humans watching.I am so disappointed, I bought this for my cat in May 2016 and she loved it but it got lost somewhere. I was going to buy her a new one until I saw the huge price increase!! I purchased this toy for $6.83 in May, it is now $17!! No thank you! I'll purchase a regular hexabug and attach a feather myself.I like this but it collects a lot of dust and feather along the way. I found that regular hexbug work just as good and costs half as muchGanz okay aber ich würde die Maus eher empfehlen. Der Hexbug bewegt sich ganze Zeit nach dem einschalten die Maus allerdings nur bei Berührung. Das Problem ist das er Bug überall drunter kommt, habe ich ihn beim Öffnen gleich unter dem Kasten hervorholen müssen und das hat sehr lange gedauert. Wenn man allerdings nichts hat worunter er kommen kann ist es sicher ein cleveres ding :-)Katze mag das Spielzeug .......man muss aufpassen das es nicht unter dem Sofa läuft das Spielzeug .......läuft wirklich alleine wechselt die Richtung Umkreis von 100 ...200 Meter mehr nicht . Würde ich auf jeden Fall empfehlen den Artikel .....dann das mit der Feder dran ..katze hat viel Spaß !!! ????? und kann sich damit alleine beschäftigen !!!Unsere Katze geht echt steil wenn der Hexbug los krabbelt :-)Er findet auch von allein wieder unterm Sofa hervor, nur Teppich mag er nicht.Bei uns ist jedenfalls immer ein großes Hallo, wenn wir den Bug mal wieder krabbeln lassenFinde das Spielzeug super. Musste zwar nach ner kurzen Zeit bereits die Batterie wechseln aber das ist jetzt nicht so schlimm.Mein Kater liebt dieses Teil und könnte den ganzen Tag damit spielen :-)Die Katzen haben riesig Spaß mit dem Käfer! Nebenbei zeigt sich der Käfer noch als Staubwedel und holt alle Staubmäuse unter dem Sofa raus ?