I tried a 39.99 'dehumidifier' and moisture absorbers to see if they can beat a full-size dehumidifier
Briefly

The UniBond Aero 360° Moisture Absorber is a cost-effective solution for managing window condensation in older properties without high expenses of electric dehumidifiers.
Testing demonstrated that both the UniBond Aero 360° and Russell Hobbs Mini Compact effectively manage moisture, proving that lower-priced dehumidifiers can be viable alternatives.
For a hands-on approach, using moisture absorbers like the UniBond Aero 360° provides an easy and economical measure to combat humidity issues without expensive investments.
With single glazed windows particularly prone to condensation, utilizing affordable moisture absorbers could provide immediate relief until more permanent solutions like secondary glazing are possible.
Read at Homebuilding & Renovating
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