clearning under furniture is seldom done due to inaccessibility. My idea is to block lint and other items from seeping underneath furniture. This can be achieved in multiple ways of which I shall list a few.
Using positive pressure method - generate a constant airflow blowing out. This works on furniture with very small gaps around. As a fan or air pump is required this is also a costly and perhaps noisy option. However, combined with a heating system may be practical.
An cushion or bellow that can be inflated and topped up if required. This is a fairly universal method but requires a preformed cushion or bellow that fits the gaps perfectly. The filling can be air or some for of expanding foam. Of course, the obvious way is to use furniture that does not have gaps and smoothly attaches to the floors. This can also be achieved using retrofitted skirting of kind.