Mega-Steam Smoke Fluid 2oz bottle Proudly Manufactured in the U.S.A. JT's MEGA-STEAM Smoke FluidTM!!!! Thick, dense smoke output yet it dissipates quickly, leaving little or no "train room fog" hanging in the air. NON-TOXIC. Comes in 2oz bottles with "pin-point" end glass droppers for accurate filling. All of our smoke fluids are scented just right, not too heavy, not too light***. Petroleum-based formula. Smoke itself is non-toxic Not suitable for use with Piko, LGB, or Massoth Suethe-Style Smoke Generators / Units.