A P-Wave is a must have for any urinal. P-Wave trough screens feature up to 30 days of fragrance, keeping the urinal/trough area smelling fresh and clean. The P-Wave deodorising urinal screen has an anti-splash system, preventing urine from reaching grout or floor finishes and damaging them. Furthermore, these P-Wave screens have a unique shape, which allow them to fit into wide base urinals/trough, prevent blockages from articles such as chewing gum and the P-Wave reduces uric acid - an unpleasant scented acid emanating from urinals.