Are you one of these persons who like to have cops on their property?
If you grew up in the US and didn't have the background "pensioner dies after discovering WWII ordinance in field" story every couple of years, it must seem unlikely indeed. But for those who do, they're not as stupid so as to think so.
Yeah which isn't the case.
If you hate the cops so much, that's all the more reason to let them deal with the sketchy bombs!
The level of PPE and training required to safely dispose of explosives far surpass what I can afford financially.