I almost bought this vacuum cleaner because of the negative reviews but I'm glad I did! I'm not sure what these reviewers were talking about because this vacuum cleaner does everything I wanted it to and then some. I wanted a vacuum that would replace my broom and dustpan to save time picking up light to medium dust and dirt, pet hair and leaves and anything else that gets tracked on a daily basis. It does the job for everything! Out of curiosity I tried it on a litter box around a litter box and on lower settings it wasn't a problem. It starts to lose suction as the canister or roller fills up with hair, but isn't that to be expected? Simply empty the canister, clean the roller and you're back on the road. Also, based on the reviews, I was expecting the battery to run out in a matter of minutes, but it was enough to vacuum my entire house and I still had a full strip left. Overall, I feel like the negative reviewers were expecting something this vacuum didn't have. It's designed to clean tile or hardwood, not carpet! But carpets with a low pile can also do well with it. Exceeds my expectations by far!