Through the process of making THC e-juice, you may end up with lots of remainders in your containers or on your beakers. So, rather than letting this material go waste, I found a good trick to salvage it. One method that you might want to use is to soak each jar with terpenes, which then dilutes the concentrates that are left in the jar. Doing so allows you to pour the contents out. You can actually use these terpenes when making your own personal e-juice.  As you extract terpenes from its vial, be sure to put the lid back on so that you won’t make a mess in case you knock it over. Take the terpene that you have been recycling through, and pour it into the jar with THC remains that you would like to salvage.