Where do they go?

So I love digging Evan's boogers and clipping his nails. Except he now doesn't like me digging his boogers. It's a huge struggle. Some days I see that he has a lot of boogers when I check. Some days he doesn't have any at all. Where do the boogers go? Cause I didn't dig them out. Let me tell you where I've seen them. In the tub. On my boob. And on his bib. Otherwise, where are the rest? I wonder cause I keep thinking that they will show up one day stuck here and there...a little every where!