I'm pretty sure it is but its extremely nasty and it stinks like crazy, but it depends on what you are planning to use it for.
Yes, ferret cologne would be safe to use on your dog
Yes, it would be safe to wash your dog in ferret sheen.
Not it is not safe for a ferret to chew on a towel. Young baby ferrets are teething and need chew toys made for ferrets like "n-bone" and feed dry ferret food.
Horse manure needs to be composted for about one year before it is safe to place around plants. You compost manure in mush the same way you would anything else. Once it reaches the consistency of dirt then it's safe to use. Most people seem to have their own 'recipes' for composts.
Yes and yes. The horse manure should be well rotted before use as fresh manure can burn stems and roots. Only if there is E.coli,which is unlikely, in the manure is there any risk.
It's safe, as long as you cook it
Yes it is okay to let your play in a safe room that has been ferret proofed. My own ferret stays in my bedroom free roam and has never been caged.
You can put a ferret in a hamsters cage on a temporary basis as long as it's not being used to house hamster's as the ferret will kill them. A ferrets needs a large size cage made for ferrets.
Yes, but it is better if it has aged and ask the farmer what drenches he gave the sheep and watch out for weed seeds if it is fresh manure.
Frontline, Frontline Plus, and Frontline spray are all safe for tick control. One tube of the cat size once a month. With the spray: 2 sprays per pound of ferret (ie a 2 pound ferret gets 4 sprays) (from Ferret Health List)
The best way is to have your ferret seen by a veterinarian. To the best of my knowledge there is no dewormer that you can buy in the store without a veterinary prescription that is labeled as safe for use on ferrets. Your veterinarian should run a very simple and fairly inexpensive fecal test to determine if your ferret has worms and what kind of worms they are. Then he/she will select a dewormer that is effective against that type of worm and safe for your ferret.
A Ferret kit is a baby Ferret.