Order by the 28th October 2026 for Halloween Delivery

Smoke Fluid & Fog Fluid

Froggy's Fog UK is the official UK distributor of Froggy's Fog smoke fluid and fog fluid, the water-based fog juice used by scare attractions, theatres, film crews, DJs and fire and rescue trainers. Our fluid works in any water-based fog or smoke machine, and comes in 2.5 litre, 5 litre and bulk sizes. Stock orders leave our UK warehouse the same or next working day.

Which fluid do I need?

Pick by the effect you want, not the machine: any water-based fog machine runs any of these fluids.

  • Bog Fog: white-out and fog-out scenes, scare mazes and big outdoor ground fog with a fog chiller. Our densest smoke fluid; works best in machines of 700 W and up.

  • Swamp Juice: outdoor events, large halls and warehouses. Extremely long-lasting fog that fills big spaces.

  • Backwood Bay: showing off lighting and beams over a long show. Extreme long-lasting fog with even dispersion.

  • Velocity: photography, film, drama, steam-pipe and burst effects. Fast-dissipating: clears in about 30 to 40 seconds, no glycerin added.

  • Freezin' Fog: outdoor low-lying fog and Halloween graveyards. Ground fog; needs a fog chiller.

  • CryoFreeze: indoor stage and studio ground effects, weddings and plays. Low-lying fog that doesn't linger.

  • Training Smoke: fire and rescue drills and simulated smoke training. Realistic smoke in standard, extreme-density and quick-dissipating versions.

Want a lighter veil for beams rather than thick fog? Use a haze fluid such as Pro Haze Fluid or Beam Splitter in a water-based hazer, or K-RAZY Haze in a Martin K-1. Not sure? The Fluid Finder narrows it down, or call us on 01342 842 383.

About our fluids

Froggy's Fog fluids are made in the USA from de-ionised water and pharmaceutical-grade ingredients. They are water-based, non-toxic, non-flammable and odourless. They leave little to no residue on stages, props or inside your machine, so heaters clog less and need cleaning less often.

Smoke fluid and fog fluid are the same thing: different names for the liquid a fog machine heats to make visible fog. You may also see it called fog juice or smoke machine fluid. What changes between fluids is density and hang time, which is why we stock a range rather than one all-purpose bottle.

Sizes and bulk orders

Most fluids come in 2.5 litre and 5 litre bottles, a 4 × 5 litre case, and a 208 litre drum for venues and attractions that run machines every night. For trade or bulk pricing, email info@froggysfoguk.com or call 01342 842 383.

UK delivery and safety

Orders for items in stock are dispatched from the UK the same or next working day, so there's no waiting on imports or customs for UK orders. A safety data sheet (SDS) for every fluid is free to download from our Chemical Safety page, ready for your risk assessments and venue paperwork.

Need help choosing?

Tell us your machine, the space and the effect you're after, and we'll recommend a fluid. Call 01342 842 383, email info@froggysfoguk.com, or use the contact form.

Smoke fluid FAQs

What's the difference between smoke fluid and fog fluid?

None: smoke fluid, fog fluid and fog juice are different names for the same water-based liquid a fog machine heats to make visible fog. What varies between fluids is how dense the fog is and how long it hangs in the air.

Can I use Froggy's Fog fluid in my fog machine?

Yes, if it's a water-based fog or smoke machine, which covers most machines sold in the UK. Our high-density Bog Fog performs best in machines of 700 W and above. Hazers need a haze fluid instead.

Which fog fluid lasts the longest?

Swamp Juice and Backwood Bay are our longest-lasting fog fluids. Swamp Juice suits outdoor events and large spaces; Backwood Bay is built for long shows where you want beams and lighting to stay visible.

What's the best smoke fluid for thick fog?

Bog Fog is our densest smoke fluid, made for white-out and fog-out conditions in scare attractions, mazes and visual-obscurity effects. With a fog chiller it also gives the thickest outdoor ground fog.

How do I make low-lying fog?

Run a low-lying fluid through a fog machine fitted with a fog chiller: Freezin' Fog for outdoor graveyard-style ground fog, or CryoFreeze for indoor stage, studio and wedding floor effects that clear quickly.

Is Froggy's Fog smoke fluid safe?

Our fluids are water-based, non-toxic, non-flammable and odourless, made in the USA from de-ionised water and pharmaceutical-grade ingredients. A safety data sheet for every fluid is on our Chemical Safety page. Fog can trigger optical smoke detectors, so check with your venue before use.

More answers on our FAQ page.