alligator alligators animal animals communication danger dangerous do not do not feed don't everglades feed gator sign signage signs warn warning wild barred bars caution communicate control do not enter forbidden impede locked notice pipes posted prevent prevented Restrict restricted restriction street traffic do enter not do not cross red stripes tape white work 2015 deny prohibited vector construction detour directions instruction safety temporary turn artwork cell phone modern no photo no photo's phone photography board dry erase forget memory pen prompt reminder text whiteboard writing appropriate-behavior appropriate-behaviour clean clean-up cleanliness communicating dog doggy-do droppings excrement excreta hygiene informing mess messy not-allowed not-permitted pets pickup poo prepared prohibition responsible rules sanitation waste