String trimmers get into spots larger lawn mowers can’t reach, like beneath bushes or right up against fences. No need for steel-toed work boots; any pair of covered shoes will provide adequate protection against a standard string trimmer line. This is a perfectly normal part of using a string trimmer, and it simply means that it's time to advance the string. String Trimmers We RecommendI recently tested and reviewed a number of string trimmers. Best Overall Husqvarna 110iL FLXi String Trimmer and Edger $250 at Amazon $263 at Walmart ProsCons Popular Mechanics' "Best Overall" string trimmer, the Husqvarna 110iL, offers the most complete string trimmer experience for the greatest number of users.