Overview
- Halfords advises removing umbrellas, wet clothes and shoes from vehicles and clearing slush or pooled water to cut moisture that fogs windows.
- The retailer warns that steamed‑up glass reduces visibility and can delay departures or lead to unsafe journeys during colder months.
- Toyota recommends keeping interior glass clean, placing a small dehumidifier bag on the dashboard, and using the car’s air conditioning or demisters to dry cabin air.
- Toyota lists common causes of interior damp including wet items, occupants’ breath, water ingress and poor fresh‑air circulation, urging basic checks of seals and drains.
- Dehumidifier bags use reusable silica gel and can help with prevention or minor damp, though significant leaks or heavy moisture may require repairs or professional drying, with mixed but often positive user reports online.