Removing skunks without them spraying is like most things--no Gaurantees.
I have removed them by shooting with a .22 short in the heart lung region,the short enters but does'nt exit.Do not use a long or long rifle shell,this will almost gaurantee a stinky result.
You can also use a syringe on a pole to euthanize your skunks.
The key to all skunk handling ,is to take it slow and easy.I talk quietly and move slowly.If the skunk starts to get aggitated,back off ,wait a while and start again.Best of LUCK. Tom