Kitchen Deep Cleaning, Canopy & Ventilation Equipment Cleaners – PJS Hygiene Ltd, based nr. Preston, Lancashire, North West. The build up of grease in Ducting and Ventilation systems is a potential fire hazard to the entire workplace. PJS Hygiene Ltd provides cleaning of ducting, ventilation and extract systems in Preston, Southport, Manchester, Liverpool, Bolton, Wigan, Blackpool, Bury and surrounding Lancashire.The build up of grease in Ducting and Ventilation systems is a potential fire hazard to the entire workplace. PJS Hygiene Ltd provides cleaning of ducting, ventilation and extract systems in Preston, Southport, Manchester, Liverpool, Bolton, Wigan, Blackpool, Bury and surrounding Lancashire.