Probiotic Cleaning and Mold: Results of Two Field Studies

Does probiotic cleaning make a real difference to mold? Two field tests – on buses and in a school – used only the probiotic cleaner, with surface samples taken before and after.

Two field studies: probiotic cleaning only

Neither test used an acidic cleaner – the surfaces were cleaned with the probiotic cleaner alone.

Buses · January 2019

Buses: 20 days with Sanitify probiotic spray

Bus surfaces were cleaned only with Sanitify probiotic spray. The same three spots were sampled before the cleaning period and again 20 days later, and an independent laboratory counted the yeasts and molds (ISO 7954).

	Before	After 20 days
Rear seat, right side	92,000	about 150
Driver's cabin, rear corner	380,000	under 100
Second door, left corner	360,000	about 500

Yeasts and molds per 100 cm² surface sample (colony-forming units).

School · Nov–Dec 2021

School: 26 days with probiotic cleaning only

Three adjacent rooms in a Tallinn school – a WC, a washroom and a corridor – were cleaned only with the probiotic cleaner (3% solution, twice a week). Samples were taken before the test, halfway through and at the end.

	Before	Day 15	Day 26
Washroom wall	4,700	5	1
Corridor floor	3,500	30	10
WC floor	Too many to count	50	2

Mold colonies per surface sample. The testers note that a surface can't be made completely mold-free while spores keep arriving from adjacent rooms.

What the results mean

The probiotic cleaner washes the surface and leaves beneficial bacteria behind. They feed on the soap residue and dirt that mold lives on, so mold has a harder time settling again.

In both tests the counts fell sharply within the first two to three weeks, and in the school test they kept falling through the second half of the period.

How to use it at home

For visible mold stains and limescale, start with the acidic cleaner – it removes what is already on the surface in minutes. Then wash regularly with the probiotic cleaner for the lasting result. Probiotic cleaning on its own also works; it just takes a few days longer.

Probiotic spray, 4 × 500 ml → Cleaning set: acidic + probiotic →

Limitations

These are field tests in a real vehicle and a real building, not controlled laboratory trials, and the reports do not include a statistical analysis. Moisture still matters: if a surface stays wet, mold will keep coming back.