i have been putting my ferret goodbye odor in their water, but it makes the water bottle really dirty 
can i mix it with their food?how?
Thanks so muck,  Ian

It is fine to add it to food. I would see why it might have issues in a bottle, but have you tried it in a water dish instead?

You could just stop using it.  I found that switching off Marshall's to a mix of kibbles with no fish went a long way to reducing odors  

THE DOOKS OF HAZARD

 
Here are some tips keeping the smell down.
 
*Keeping the litter box clean will significantly reduce odors. I clean out my litter box, 2x day.
 
*Different kinds of litter perform differently at absorbing moisture and controlling odors.  Most people use recycle newspaper pellets or wood pellets for litter.
 
*One of the most effective ways to keep your ferret smelling fresh is to keep the ferret’s bedding clean.
 
*Animal waste causes odors. You can control the both the strength of the smell and the amount of the waste with a proper diet.
 
*  Make sure your cage is made out of washable materials, such as plastic or coated wire.   Wooden cages will hold the odor in.
 
*Bad Breath can cause odor, please check your ferret's teeth.  Ferret could have dental problems
 
*Check those ears! A common contributor to strong ferret odors is dirty ears.
 
*Do not bathe your ferret. Bathing strips the ferret’s skin and fur of essential oils, and "dries the ferret out." Dry skin is itchy skin, which is uncomfortable for your ferret.
 
*Fixing your ferret.  The strongest contributor to ferret odor is not the scent sacs or glands, but the hormones.