Hog meat spoils much faster than deer. When the temperature is 80 degrees you have about four hours to get the hog in a cooler or on ice. Otherwise it will go bad. Years ago i gave a huge sow to a guy who took it to a fly by night processor. That processor kept the hog in his cooler for over two weeks before he cut it up. My friend complained about the "strong tasting" hog meat. One sniff told me it was rotten hog meat. i've seen a lot of spoiled hog meat since then.
Some guys get really sloppy with their field dressing of game. Watched guys burst the bladder and get urine inside deer and hogs. Watched them cut the intestines and stomach. i carry water in my truck to wash out the animal after it is filed dressed. If the weather permits and the hog is real muddy it goes to the car wash before being field dressed. Did that with these two hogs on Monday.