Fog/Smoke Fluid - Formula O Oil Based Training Smoke
https://www.wfrfire.com/shop/p-9348-fog-smoke-fluid-formula-o-oil-based-training-smoke-9348
https://www.wfrfire.com/web/image/product.template/9348/image_1920?unique=f935d4b
4L bottle - Oil based, for use with fog/smoke machines - extreme density, long hang time