hexed_cleaners.zip

This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:

• steamapps
  • common
    • garrysmod
      • garrysmod
        • addons
          • cleaners <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• cleaners/
  • Cleaners/
    • Materials/
      • Models/
        • Humans/
          • Male/
            • Group01/
              • Alex_facemap.vmt
              • Alex_facemap.vtf
              • Bernie_facemap.vmt
              • Bernie_facemap.vtf
              • Cleaner_Sheet.vmt
              • Cleaner_Sheet.vtf
              • Cleaner_sheet_normal.vtf
              • Jay_facemap.vmt
              • Jay_facemap.vtf
              • Leo_facemap.vmt
              • Leo_facemap.vtf
              • Mel_facemap.vmt
              • Mel_facemap.vtf
              • Nick_facemap.vmt
              • Nick_facemap.vtf
              • Steve_cylmap.vmt
              • Steve_cylmap.vtf
              • Tak_facemap.vmt
              • Tak_facemap.vtf
              • Tyler_facemap.vmt
              • Tyler_facemap.vtf
    • Models/
      • JBarnes/
        • Cleaners/
          • clnr1.dx80.vtx
          • clnr1.dx90.vtx
          • clnr1.mdl
          • clnr1.phy
          • clnr1.sw.vtx
          • clnr1.vvd
          • clnr2.dx80.vtx
          • clnr2.dx90.vtx
          • clnr2.mdl
          • clnr2.phy
          • clnr2.sw.vtx
          • clnr2.vvd
          • clnr3.dx80.vtx
          • clnr3.dx90.vtx
          • clnr3.mdl
          • clnr3.phy
          • clnr3.sw.vtx
          • clnr3.vvd
          • clnr4.dx80.vtx
          • clnr4.dx90.vtx
          • clnr4.mdl
          • clnr4.phy
          • clnr4.sw.vtx
          • clnr4.vvd
          • clnr5.dx80.vtx
          • clnr5.dx90.vtx
          • clnr5.mdl
          • clnr5.phy
          • clnr5.sw.vtx
          • clnr5.vvd
          • clnr6.dx80.vtx
          • clnr6.dx90.vtx
          • clnr6.mdl
          • clnr6.phy
          • clnr6.sw.vtx
          • clnr6.vvd
          • clnr7.dx80.vtx
          • clnr7.dx90.vtx
          • clnr7.mdl
          • clnr7.phy
          • clnr7.sw.vtx
          • clnr7.vvd
          • clnr8.dx80.vtx
          • clnr8.dx90.vtx
          • clnr8.mdl
          • clnr8.phy
          • clnr8.sw.vtx
          • clnr8.vvd
          • clnr9.dx80.vtx
          • clnr9.dx90.vtx
          • clnr9.mdl
          • clnr9.phy
          • clnr9.sw.vtx
          • clnr9.vvd

M A C, pntmn, Russia Greatest Love Machine, Пожилая Скумбрия, MonkeyMo, Agent1337, Agent1337, Warpath-The-Laughing-Swordfish, Yukon, Yukon, The Rocket Gamer, Тимофей Русанов, LazerSpy, GFI_Plumber