The aim of this study was to investigate the effect on indole and skatole concentrations in subcutaneous fat (boar taint) of two housing conditions: keeping pigs heavily fouled with faeces on a concrete floor versus keeping pigs clean on a wholly slatted floor. Both groups of pigs were kept at a high stocking rate (0.6 m2per pig) and high temperatures (≥25[ddot]C). This study also aimed to show if changing the treatment a week prior to slaughter is sufficient to change the concentration of indole and skatole in subcutaneous fat.