Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Blows!

These things are junk! I bought two 2 packs of these, and the first one each cartridge lasted 3 to 4 weeks. On the second pack one of the two in the pack never worked, and the other lasted 2 weeks... Buying these is like taking your money out, and throwing it out the window of your car on the highway!