Polypropylene and polyethylene are pretty chemically stable, if they spray a PTFE coating over the top, chemical attacks are kinda useless.
They’re not all that enclosed though. Submerging the robot in water or spraying it with a high pressure spray would work well. Rather than trying to drench it repeatedly with benzene or aqua regia, just get a $50 cordless pressure washer and find a hose.
Polypropylene and polyethylene are pretty chemically stable, if they spray a PTFE coating over the top, chemical attacks are kinda useless.
They’re not all that enclosed though. Submerging the robot in water or spraying it with a high pressure spray would work well. Rather than trying to drench it repeatedly with benzene or aqua regia, just get a $50 cordless pressure washer and find a hose.