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Because I tried it and it measured pH at 3.8, so I want to adjust it to about 7.

Please ask about this water-based mosquito repellent spray formula. 1. 99% diluted wood vinegar 2. น้ำมันหอมระเหย citronella 0.2% 3. Flora Solve™ Clear 0.8% Try to mix it together but measure pH=3.8 don't know if it should. Which one do you use to adjust the pH? And how much to add and if you use Eu...