Please do not have kids
Step 1 - clean rubber top of bottle
Step 2 - using a larger gauge needle that you will be using to inject with, inject the amt of air INTO the bottle that you will be drawing out Step 3 - with bottle Upside down, draw the fill line with the desired number Printed ON the syringe
Step 4 - turn the bottle right side up, remove syringe, turn syringe so pin is upright, draw a little air into the syringe to get all substance out of needle
Step 5 - Change the pin! Push air from syringe until a drop comes out the top. This will make a huge difference in pain and scar tissue!