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

I was thilled at getting my dirt devil broom vac and as soon as I got it and charged it for the 24 hrs as reguired I started to use it. I was very dissapointed at the amount of times I had to go over smaller particals the size of peas several time just to get the thing to pick the items up. Also very poor design in the filter system. The little flat that opens allowing what particals like hair and dust to get up in the cup go directly onto the filter and stay there blocking the flap from closing and particles fall back out. No way does this machine pick up M&M's like on the comercial or a pile of dirt like they do either. Would not recommend.