Detergent pack comprising a combination of a malodour-generating water-soluble cleaning pouch, comprising a liquid composition and an enveloping film material, and a packaging container therefor wherein: a) the liquid composition comprises a first perfume; and b) the packaging container comprises a hot melt adhesive adhered to an internal wall thereof, the hot melt comprising an aldehyde-comprising perfume. There is also provided a method of preventing or reducing malodour in the interior of a packaging container containing a malodour-generating water-soluble pouch.