Most importantly, check for damage. Stretched or broken chains, tears in the rubber harness, or dull spikes are all great ...

Intriguingly it’s not the spikes themselves that pop the bacteria – it’s the spaces between them. The dull spikes are just the right distance apart that when bacteria land on them ...

Eurasian magpies typically build their nests from thorny branches, but some birds have discovered anti-bird spikes work just as well—if not better. In an example of “the perfect revenge ...