Yep. Shields make sandworms go bonkers. Off Arakis? Shields abound, and not just on people.<br/><br/>From page 196<br/><br/><div class="quoteheader"><div class="topslice_quote">Quote</div></div><blockquote class="bbc_standard_quote">Shields are affordable for most Houses and are commonplace with nobles and their retainers, with even some merchants able to have one. Holtzman shields are the primary reason for the move to more medieval forms of combat involving melee weapons. Their use on Arrakis is limited, as the vibration attracts the sandworms and puts them in a violent rage.</blockquote><div class="quotefooter"><div class="botslice_quote"></div></div>