1. The D.Savage refill that I ordered is not effective this time but it was good when I ordered previously. Not sure whether the perfume concentration has been lowered or any other problems. It's not long lasting even for few minutes inside the car (even I tried to setup car's air circulation mode is INSIDE the car) but the good smell is not sustaining as expected.
2. Another problem with the diffuser itself, it used to diffuse the perfume often when we drive based on the vibrations but it's not diffusing the perfume unless until we press the button manually. Diffuser charge is full and we just got refill also. It's disappointing with Nerve Fragrance diffuser and that's my current experience.
