We have bath stone chippings in our small garden, spread loosely on a concrete base. Over the years they've become contaminated with dead leaves, twigs and compost and I'd like an easy way to clean them. I suppose these are mostly around 1cm^3 +/- quite a lot.
Is there some sort of vacuum cleaner attachment which will only pick up the lighter stuff without lifting the stones? A filter won't do as the dead leaves etc are usually bigger than the stones.
Or perhaps some other method?
Cheers