Here are some tips from all over the internet...
* Nine out of ten ferret-specific treat foods have no meat products whatsoever and are comprised entirely of sweeteners and grains, with some fruits and vegetables thrown in. This is not only not healthy it is downright dangerous.
* A ferret's cage should be a minimum size of 24”x24” x18” high for up to two ferrets. The cage can be multilevel, but avoid steep ramps because ferrets are not natural climbers and could fall and injure themselves. Aquariums are not suitable cages for ferrets because of inadequate air circulation. Also, the flooring should be solid, not wire bars or mesh.
* Litter boxes should be rectangular (NOT triangular!) and large enough for the ferret to get all four feet in and back up in a corner comfortably.
* Zinc, iron, vitamin D can be toxic to ferrets if given in too high of doses.
* Clumping litters are harmful to ferrets and should never be used.
* Pine litter or crystal litter should not be used for ferrets.
* Cedar shaving bedding should NEVER be used for ferrets as it can cause irreparable respiratory damage.
* Ferrets need to be provided with fresh food and water twenty-four hours a day. (they only eat what is nessecary)
* A few drops of Ferretone or a pea sized dab of Ferretvite should suffice as a daily treat (don't follow the directions on the bottle- your ferret's food contains vitamin A as well). Always be aware of the dangers of possible vitamin A toxicity. For this reason, it is not advisable to give your ferret too much of any supplement, even though they may really enjoy it.
* Baths are recommended no more often than once a month. More frequent bathing will dry out the skin and coat, and actually make your ferret smell worse as the body works extra hard to produce more skin oils.
* Clip your ferret's nails every 2 weeks. Clipping at one week may be uncomfortable for the ferret and cause retraction of the "quick" which can lead to later arthritis, and waiting three weeks allows the "quick" to elongate, which can cause pain while walking.
* Clean your ferret's ears twice a month.
* To clean the ears, use a Q-tip moistened with a gentle cleanser such as Oti-Clens or Clorahexiderm. You could use hydrogen peroxide or mineral oil, but HP may dry out the ear, and mineral oil may add to the was problem. Alcohol is too strong and painful to the sensitive ear membranes.