https://www.bloomberg.com/graphics/2019-eliminating-african-swine-fever/ Every now and again someone grumbles how they had their boots washed by Customs and Border Protection Agriculture Specialists, or mockingly joke how they managed to evade such cleaning. Somehow the whole thing is trivial and as some have mentioned, what does this have to do with terrorism. Customs and Border Protection has many roles and one of them is enforcing USDA regulations for the protection of US agriculture. This article highlights just one disease that can come in on infected soil on your boots. As a graph points out in 46% of cases the virus was carried on vehicles and workers without disinfection. And " Infected blood, or fluids from urine, saliva or feces can be carried on dirt on truck tires and SHOES." Again, this is just one disease. Foot and Mouth Disease (FMD) is also in several African countries and can also be transported in the same manner. Feel free to think it's a joke of a job for CBP, but realize this disease isn't a joke to anyone with hogs like @gizmo, never mind the multi-billion dollar swine industry in the United States. And FMD is not a joke to anyone with goats, cattle, sheep, and swine like @phillip Glass and his sheep. As hunters we have a higher than normal chance of coming into contact with various animal body fluids during our hunt. You will wash, and your clothes get washed but your footwear is often not unless you do it. So, wash your boots before you leave and don't complain if that CBP Agriculture Specialist wants to disinfect your shoes when you hit US soil again. Honestly, they're just trying to keep your BLT as cheap and available as possible.