The roller ball top of the liquid version of SoE will indeed come out so you can suck out some of the liquid to mix with TE or NPA. So, that is the way to go in terms of mixing DD1.
I use an eye dropper to get the pheromones and drop them into another bottle for mixing and measuring. I generally work with drops. However, this isn\'t the most totally accurate way of measuring. Some people get the eye droppers with measuring marks on them to aid in being very scientific about their measurements.
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