Put the other two foose balls on top of the ping pong ball. It should just skim the floor - if not, adjust the weight. Beginning bouncing this new toy up and down - add ferrets. Your ferret should try to grab it, but be careful the foose balls will fall out - just put them back in. To control odor, don't bathe the ferret.
Ferrets secrete more oil to replenish what is lost from bathing.
Unless your ferret tried to dig its way to China in your favorite potted plant, has fleas or walked through your kitchen after stepping in water soluble purple paint mistakenly left on the floor - ferrets can go for several months without bathing. Bathing once in the Spring and again in the Fall helps remove shedding fur. Smell or odor comes from your fuzzies bedding and waste. Clean out litter box daily. Replenish with fresh litter at least once a month, depending on how many ferts you own.