Instruct: Classify Amazon reviews into positive or negative sentiment
Query: poor design

We bought this toy for our daughter for Christmas. When we first put batteries in it, all of the butterflies came out of the trunk, but 5. That one game was a lot of fun! Too bad that was it. I've tried 3 different sets of NEW batteries, but after you turn it on, it might blow out 2 butterflies in 2 minutes. The rest of them just swirl around in the bottom of the game. It's too late to return it, so I'm going to do a little engineering myself and open up more vent holes in the bottom, to give the fan the power to blow the butterflies out of the top. Hope it works. I've been a machine maintenance and repair professional for 20 years. I would have thought that this would have been fixed by the company before marketing it, or would have been cought by their quality control dept.