How a Shoe Factory Reduced Mold Claims by 90% — Real Case

Short answer: An anonymous export shoe factory cut client-reported mold claims by about 90% after locking four stages: plant climate check, on-line moisture sampling, vapor-phase chip/bag placement, and pre-shipment re-check — instead of only adding more silica gel.

The problem

Claims arrived months after shipment. The factory had already increased silica gel count, but complaints continued on rainy-season lots.

Root cause

1. Environment ignored — Warehouse and dispatch-point humidity not recorded.
2. Materials re-wet — Packing materials absorbed moisture after cutting.
3. No vapor-phase standard — Operators treated anti-mold as optional.

The solution

1. Stage 1: Plant environmental analysis on the Bester after-sales form.
2. Stage 2: Nine-part moisture check (vamp, midsole, lining, cartons, papers, lace) graded Normal / Controllable / High / Risk.
3. Stage 3: Lock A505 (peak season) or C304 placement SOP; re-check before loading.

Result

After one full season under the locked process, the factory reported roughly 90% fewer mold-related claims versus the prior year (client-reported). Exact claim counts stay confidential.

Limitations

90% is client-reported, not a lab guarantee. New factories, new materials, or skipped SOPs can reverse gains. Chips do not fix already moldy stock.

Relevant test data

According to SGS test report (Mold Growth Rating: Grade 0, 28-day test, 8 mold species, tested on paper/cloth/leather — all three materials showed zero visible mold growth), A505 anti-mold chips inhibit spore germination throughout the test period.

FAQ

Sources and further reading

• Full-process service
• Testing & Compliance Center
• Buyer FAQ