The answer was to mount a cheap Harbor Freight brush somewhere and make the head pass over it after each layer. You can see the video of the design, below. It sounds as though it worked well and ...

Long handle for added reach Handy hanging hole Flexible bristles Tackle hard-to-reach spots with ease using the Long Handle Silicone Bottle Brush. Designed to glide into bottles and glasses, the ...

It also has what Shark calls “powerfin nozzles,” silicone brushes built to deeply and continuously clean floors and carpets. A self-cleaning brush de-tangles as it vacuums to prevent pet and human ...