**Rocks chew up weed eater string.**
Yep. Through their 24 years at their home, our nearest neighbors here in the woods have made several flower beds in their 2 acres. They adjoin the edge of the house or are out in the yard. They have also created 2 foot mulched areas around about a dozen trees. Every one of these areas have been given rock borders, with the rocks being about fist to football size.
He is 91, and she is 85. Both still have decent health, but have been paying me to come over to string trim more and more. The use a Dawn soap-epsom salts-vinager weed burnback spray mix.
They could cut back on a LOT of spraying and weed eating if they got rid of the rock borders,... at least around the trees.
Bless you for helping your neighbor.