You have three choices and only two of them are very viable. You can hold it all day(not viable), you can pee in a bottle or you can let it fly from up high. I let it out fly right out of the stand and have not had a deer get spooked yet. I' ve had deer sniff it and look around then just continue on their way. I' ve had deer lick the pee off the leaves below as well. Urine is mostly amonia and all mamal urine is very similar. The differences come from what you eat or passing over scent glands like a buck making a scrape. A deer might detect that you are a meat eater, but no necessarily a threat. Make sure to mind the wind so as not to get the tree or your boots soaked.