The defogger kit is very easy to use. Make sure that the mixture is mixed up very well (shake and stir), take whatever you used to stir with (coffee stirrer in my case) and put a drop on a piece of paper. Let it sit for a short while, long enough to let some of the fluid soak into the paper. This will leave you with more of the conductive material that will be easier to work with. Take a pin, needle, safety pin, whatever you want to use along those lines and cover the tip of it with the conductive stuff on the paper. Draw on to the bridges. Took about 45 seconds to close the bridges this way. The stuff dries quickly, too. You can have it up and running in no time after closing the bridges.