Under normal use, you need to advance your string trimmer’s nylon cutting string whenever the tool isn’t cutting effectively. That happens every few minutes or even quicker in tall grass and weeds.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The string trimmer is both a blessing and a curse. It can be a tremendous ...

A reliable string trimmer enables you to easily cut grass along fences, around tree trunks and bushes, and near flowers and edible plants as well as tackle weeds, brambles, and other unwanted growth.