In my opinion the best place are Zao Steppes, just throw some fire bombs in places where you see groups of them.
+ Little suggestion - if you kill Grand Master Oberon everyday, skip Sandcrawlers during Rapid Respawn Weekend and simply kill it on your way to Oberon (in case if you don't care about your Stamina).
TibiaQA fansite banner design - resultsOctober 13, 2019
Contest: TibiaQA fansite banner designSeptember 16, 2019
New TibiaQA banner chosen!October 09, 2019
How can I know where I got downvote?October 08, 2019