What exactly are the bees bringing in that makes old wax all brown when they walk all over it with their little feet?
Tell the kids to take their shoes off before they drag all that dirt all over your clean floor.
Dirt.
Sincerely,
Brendhan
Dust & Pollen most likely.
I would follow Understudy's advice except I've never been able to find a boot scraper small enough for the bees to use. I thought of issuing them galoshes but had trouble finding the right shoe size. If you run across some cobbler fairies let me known and I'll place a large order for bee boots.
Hah...I melted down some burr comb today and there was a whole lot of nasty "dirt" that separated.