if refrigerated, the solution is good for 30 days from the day it is made and must be shaken well before use. before you get to work, take a hunt at what you are sitting on. when i visited the school, the toilet was almost completed. all we ask is that you keep them on a lead and clean up after them. visit our shop small page to learn more about this fun shopping event and how to obtain a sip list guide before supplies run out! on the first day, there are enough farm animals that they are fed the leftovers. 