Corona Virus symptoms poster, and the words.
DONT LET IT WIN, WASH WHEN YOU COME IN! stick one on the entrance to your building, inform everyone who enters that they are required to spray. It shows people how to keep 2 meter distance, about washing hands, that cleaning shouls be donw regularly and contact details for suspected infection.
Choose from basic A5 (148 x 210mm) , A4 (199 x 297 mm) , A3 (297 x 420), or even A1 (594 x 841mm) size