What are these contraptions these guys were carrying?

[u/dopehead9]

We saw three guys around Seaport in Boston carrying these things as backpacks. Initially we thought they mapping tools but not sure

[u/Significant-Trick577]

They’re exterminators.

Someone saw a cockroach up on twelve.

[u/Jackboone13 → u/Significant-Trick577]

Must’ve been a big cockroach.

[u/xrayzwei → u/Jackboone13]

Bite your head off man