the spiders are fighting back

Over the past few days I've been noticing tiny, tiny spiders dangling from various items of furniture in different parts of the flat. I'm wondering if this is some spider version of sniper warfare - they're almost unnoticeably small, so there's no way I can get rid of them all. The hoover ain't much use this time. But these spiders will grow bigger. And when they do, I'll be waiting for them.