Are magnets allowed in BattleBots?

Excuse me, could you please clarify for me the policy regarding magnets in BattleBots competitions? I'm wondering if there are any restrictions or guidelines that competitors need to adhere to when it comes to using magnets as part of their bot's design. Specifically, are magnets allowed to be used in the construction of BattleBots, and if so, are there any limitations or safety precautions that must be taken into account? Your insight on this matter would be greatly appreciated.