Instruct: Classify Amazon reviews into positive or negative sentiment
Query: BEWARE!

We receieved this vacuum as a gift and were really impressed with it's cleaning ability the first two weeks of use...although we were disapointed with the length of the power cord, it was much shorter than our previous vacuum. As our first bagless vacuum we loved seeeing the cleaning results and emptying the canister was not too messy. However during our last use of the vacuum cleaner before returning it to Bissel, it left black burn marks on our carpet. Now we our stuck vacuumless while we shop for a new vacuum AND new carpet. BEWARE we would not recommend this product.