OK, we've got the school contract here. All of the buildings are red brick with a ruff face. They will not allow roundup along the building. All total the footage of all buildings comes to 9.73 miles. Short of walking with a string trimmer does anyone else have ideas to speed this process up? The ruff brick also eats trimmer line (.105) really fast. About 8 times faster then normal. Has anyone seen or tried those trimmers that attached to Z's? Other ideas?