You could try the deslorelin implant?
We have had it done on our ferrets and has worked very well

I have heard the jill jab can be stressfull.

if you get the hob castrated (after 3-6 weeks I think it is) he can go back with the girls he may bring them out for you through biting their necks. Or like others have said get the Jill Jab, are your ferrets kept inside your home or are they outside.

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Everyone is entitled to be stupid, but some abuse the privilege.

Biting their necks doesn't bring them out of season, mating them does.
A castrated hob loses the desire (and equipment) to mate.
A vasectomised hob can still mate, but his tubes inside are cut (they can re-connect, causing unwanted pregnancies), This leaves the hob entire, which also leaves all the hormones, agression, not caring if the jills are in season or not he wants to 'love' them all, no peace for the jills, probably needa to be seperated for half the year or more.

I am sorry but you are wrong biting the neck can and does bring them out, I didnt say it will everytime, but I have known jills bring eachother out at times. I have had ferrets a very long time so dont need told about them thanks. I was saying if they get the hob castrated he could still bring them out.

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Everyone is entitled to be stupid, but some abuse the privilege.

the implant isnt used alot so its still new. but as you say that is an opinion, The Jill jab tends to sting so the ferret may make a noise, Its advisable to rub the neck after the shot is given because you sometimes can get a lump at the injection site.

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Everyone is entitled to be stupid, but some abuse the privilege.

thanks for all your replies! have had to pop Dennis the menace in a cage by himself - was getting a little rough with Flick and she is less than half the size of him! will he be ok by himself?

They still all come out to play together, he spends most of his time trying to source out the girls and then drags them behind the sofa ....then lets go!
He has not hurt any of them and luckily they are a damn sight quicker and have a lot more brain cells so manage to evade him most of the time!

little one looks like she is coming into season, so am phoning vet on monday to get her booked in for jill jab. vet said that he would be happy to spay her at 5-6 months - but i feel happier letting her mature a bit first. Den is going to be castrated in next few weeks, then hopefully we can have a happy family again.

Thanks again for all of your replies x