Hygiene & Catering Signs - Kitchen environments are among one of the most dangerous workplaces in the UK, the correct appropiate signage in kitchens and catering environments can reduce the risk of accidents. The correct safety signs can not only protect people eating the food but also the staff and visitors in the kitchen. Safety Signs and Notices offer a wide range of signs that can help prevent incidents in the workplace. A few of the most common signs in the section are Now wash your hands sign, Caution Very hot water sign, drinking water only sign, hand wash only sign and food preparation area signs.