September 2026
Sanitation people tend to be the easiest customers we talk to, because they already understand the problem before we open our mouths. They have the same two constraints on every piece of equipment: no chemical residue on a food contact surface, and no standing water anywhere in the plant.
Which rules out almost everything.
The build-up that resists your normal cycle
A wash-down handles what a wash-down handles. The material that defeats it is the carbonized layer, and it forms wherever product meets heat.
Ovens and proofers get a hard brown-black glaze from sugar and fat. Fryers and kettles polymerize oil into something closer to varnish than grease. Conveyor belts and chains build up a mix of product fines and lubricant that packs into every link. Mixers, hoppers and extruders hold starch and dough residue in radii that no brush reaches. Smokehouses get creosote. Packaging equipment gets adhesive and film residue.
None of that is soft soil. It has been cooked on, which means it is bonded rather than deposited, which means volume of water and time will not shift it.
Why the usual escalation goes wrong
When a wash-down stops working, the escalation path is predictable and each step has a cost.
Stronger chemistry is first. Caustic will take carbonized residue off, given dwell time. Then you own a rinse verification problem on every food contact surface, plus the disposal, plus what repeated caustic exposure does to aluminum and to gasket material over a few years.
Higher pressure is second, and that is where you create the sanitation problem you were trying to solve. High pressure aerosolizes whatever it hits and carries it across the room, which is exactly the mechanism nobody wants in a processing environment. It also drives water into bearings, motors, drive housings and electrical, and wet bearings fail.
Manual scraping is third, and it is slow, it damages surfaces, and it only ever gets the places a person can physically reach.
Disassembly is last. It works, and it eats the whole sanitation window.
Bearings and drives are the hidden cost of a wet clean
The sanitation argument gets all the attention, but the maintenance argument is often the one that gets the job approved.
Every wet, high-pressure clean puts water at seals that were not designed to be hosed. Conveyor bearings, drive housings, gearbox breathers, motor junction boxes. Water gets past a seal that is a few years old, sits in the grease, and the bearing that should have run another three years fails in eight months. Then the failure gets logged as a bearing problem rather than a cleaning problem, so nobody connects the two and the cycle repeats.
Electrical is the same story with a different symptom. Water in a junction box or a sensor connector gives you an intermittent fault that costs more in chased downtime than any cleaning ever saved.
A dry method takes that whole category of failure off the table, which is worth putting in front of whoever signs off on the maintenance budget rather than only the sanitation lead.
What makes dry ice suited to a plant
The reason this method is used in food production is not that it is quick. It is the two things it does not leave behind.
There is no chemical. The media is solid carbon dioxide, which is already a food-industry gas, and it leaves as gas. No residue on a contact surface, no rinse verification step, no chemistry log entry.
There is no water. That matters twice over: nothing standing in a floor drain, a housing or a frame section for bacteria to use, and no dry time added to the end of the window.
Then there are the practical wins. Equipment gets cleaned hot on some applications, and cleaned assembled on most, which is where the window savings actually come from. Belts, chains and awkward geometry get reached because the stream follows the shape rather than needing a flat face.
The equipment list runs through ovens, processing equipment, conveyors and belting, bakery lines, mixers and hoppers, and packaging machinery.
Where it does not replace what you already do
Being straight about this saves everybody a conversation later.
This is not a sanitizer. Removing soil is not the same as achieving a log reduction, and dry ice blasting does not replace a validated sanitation step. What it does is remove the build-up that was preventing your sanitation step from reaching the surface in the first place. Soil removal comes first; sanitizing comes after, and it comes from your program, not from us.
It is also not a daily tool on most lines. The right place for it is the periodic deep clean, the buildup your routine cycle cannot catch up with, and the changeover or shutdown where equipment has to be genuinely clean rather than passably clean.
Any plant with a documented sanitation program will want the method reviewed against that program and against the equipment maker’s guidance before it goes on the schedule. We expect that and we plan around it rather than pushing past it. Send what your program requires through the contact page and we will work inside it.
Carbon dioxide in an enclosed room
This is the part a serious operator raises first, so we will.
Carbon dioxide is heavier than air and it displaces oxygen. In a large, well-ventilated production hall that is a non-issue. Inside an oven, a tank, a pit, a tunnel or a small closed room, ventilation and monitoring are a requirement, not a precaution. Mechanical airflow gets planned as part of the job and low-lying spaces get treated as what they are.
If somebody quotes you work inside a confined space and does not raise this, that tells you something about who you are hiring.
Fitting it into the window
Most food work we do sits inside a scheduled sanitation or changeover window, and the honest scoping conversation is about what actually fits.
Tell us the window length, what is in the room, and whether the equipment can be locked out. We would rather scope a single line properly and finish it than take on three and hand you back a plant that is half done when production starts. On a long-neglected piece of equipment the first clean takes considerably longer than every clean after it, and knowing that up front changes how you plan the first visit.
Questions plants ask
Is the media food safe?
Solid carbon dioxide is the same substance already used in food handling and it sublimates completely, leaving nothing on the surface. Your program will still want it documented, which is reasonable, and we will work with whatever your auditor needs.
Do you need us to tear the line down?
Far less than you would expect. Cleaning in place is most of the value here, because the labor on these jobs normally lives in the teardown rather than the cleaning.
Where does the removed soil go?
It falls, and collecting it is our job, not yours. Containment and capture are planned before we start. Nothing should be left for your team to deal with on the next shift.
Can you work while the line next door is running?
Sometimes, depending on the room and the separation. That is a plant-specific answer and we would rather look at your layout than give you a general one.
Bring us the worst piece of equipment you have
The honest way to evaluate this is on the item your current cycle has already lost to. Photos and a note about the window get you a real answer. Call Giancarlo at 786-302-6553 or use the contact page. We work out of Miami across South Florida, and the whole rig comes to the plant.