I don't know what model you use but mine is quite powerful (it's not a "portable/battery" model and it has 10 steps of jet intensity) and obviously it's best us

I don't know what model you use but mine is quite powerful (it's not a "portable/battery" model and it has 10 steps of jet intensity) and obviously it's best used in combination with the brush. If this does not work, I don't know what else could work.