I hear ya. I hunt a private farm, and occaisionally someone else will show up to bowhunt (I have no control over access). When they start "stomping" around where I keep my stands, I have to relocate in a hurry...that's when I primarily start "spraying the stink".
Good point on the bacteria...I think I'll throw them in with my next load of laundry (hunting clothes) to be safe. Yean, you can say I'm too cheap to buy more, but I'll blame it on the wife and five kids.