Here's everything you will need. (You will need the needles and syringes to get the medicine out of the bottle as described below).

Here's a link to the Ivermectin I bought
http://www.valleyvet.com/ct_detail.html?pgguid=30e07552-7b6a-11d5-a192-00b0d0204ae5
And needles
http://www.valleyvet.com/ct_detail.html?pgguid=2e87beca-7b6a-11d5-a192-00b0d0204ae5
And syringes
http://www.valleyvet.com/ct_detail.html?PGGUID=c416c1ec-5a5f-45b0-b684-8dcb5fb1bece
Put the needle on the syringe and put the needle into the bottle

Turn the bottle upside down and draw out the medicine, I draw out more then I need, then tap the syringe to get the air to the top.

Then push the syringe up to the dose line

Turn the bottle back over and remove the syringe from the needle

It will only be a couple drops worth, as shown by this line. (This is for my girls who are about 2.5 - 3 lbs.)

You will want to dab a little behind each ear in the bald spots. Ivermectin given topically will kill lice AND mites.
At least 2-3 treatments given 7-10 days apart are necessary. Read more about mites here http://www.guinealynx.info/mites.html