Hi, supermamma.
Like wheez says, the clearer juices can go a while. Or when you notice when refilling that the juice still in the tank is much darker, that's the remnants, and a signal to clean. I can go 5 or 8 refills on Torque56 or Prime15. But VooDoo is one refill, your mileage may differ.
Look around in some other threads here. This has been discussed a lot. I take the tank apart, take out the coil head, and rinse well under hot water. If the wicks are anything other than white, I soak them. If I know I used a pervasive flavor (like Kringles, or Belgian), I'll soak them in cheap vodka, or drop in a denture cleaning tablet.
Welcome. Ain't this Triton cool>??