Instruct: Classify Amazon reviews into positive or negative sentiment
Query: simply doesn't work well

I really wanted to mow the yard without using gas. Unfortunately even multiple passes fail to cut all the grass. The front of the mower pushes down taller grass and prevents it from cutting it. I have to borrow my neighbors gas mower when the lawn is long and then besure to mow twice a week to make this work. Unless you have time to mow often, consider carefully.