No problems Ben.
With that particular ramp, as it had no decals / stickers I put it in a tub (big o'l one from Bunnings), sprayed Nifti on it, gave it a rinse then washed out the tub. Put it back in, more Nifti and let it soak with some warmish to hot water (not boiling). Used a toothbrush to get into the fine places and then rinsed well with water when finished.
