Instruct: Classify Amazon reviews into positive or negative sentiment
Query: needs improvement

these sawhorses do work but let me tell you, they are razor sharp!!!!!!!! i was using them brand new on the porch, my feet were sweating so i took off my shoes,,,, what a mistake,,, i bumped my toe on the leg and nearly cut it off, one fast trip to the hospital .. right to the bone, antibiotics and several stitches later and no walking on my foot for two days, and a return visit. This turned out to be a waste of my time and an exspence - instead of a savings by using this product.. be warned the sharp edges on this product will slice like butter.