Whether you call it a trimmer, a weed whacker, or a weed eater, these precision lawn tools give your grass nice, crisp edges.

At Amazon, the most popular all-around gas-powered weed eater is the Husqvarna 28cc Gas String Trimmer, which has a 4.5-star rating out of 5 stars with more than 4,300 reviews. It has a cost of $ ...

We tested several of the most popular string ... compared to their gas-powered counterparts. Gas string trimmers, and some electric models, require hearing protection when weed whacking.