Crosswave Pet + Spare Supplies
The Formula + other "Spare Parts" were purchased after a brief period of use for the Floor Cleaner, as its function indicated they would be needed - the "Filter" in particular. The product is disappointing, in that where it cleans it does a good job, however the 30mm "uncleaned edge" across around all floor areas means one has to revert to a mop & bucket in order to do a full & thorough job.
Surely Design could have at least one edge of the scrubber capable of working up to edges, even with end drive. From the image of the "filter" above, it appears this product is still in development stages - something that should have been done before marketing. Potentially a good product after further upgrades.