The invention provides a light source carpet construction (1000) comprising a light source (40) and a tufted carpet (1). The tufted carpet (1) comprises a primary backing layer (100) having a primary backing layer top face (101) and a primary backing bottom face (102). The primary backing layer (100) further comprising yarns (11) integrated in the primary backing layer (100) with tufts (12) protruding from the primary backing layer (100) at the primary backing layer top face (101), the tufts (12) thereby forming a carpet top face (2). The light source (40) is arranged to illuminate the primary backing layer (100). The intensity (12) of the light (41) at the carpet top face (2) is smaller than the intensity (1101) of the light (41) at the primary backing layer top face (101). The light source (40) is arranged to generate light (41) having a wavelength selected from the range of 200-400 nm. The light source carpet construction (1000) may be used in the prevention or treatment of allergy of a user vulnerable for dust mite allergy.
