[tamimio]

No need for chemicals, like other said, use steam, and also use diatomaceous earth (1) to kill them naturally.

(1) https://en.m.wikipedia.org/wiki/Diatomaceous_earth

[beej71]

And from my reading and experience, diatomaceous earth is completely effective, unlike many chemicals.

[KRAKRISMOTT]

Get the variety that's statically charged, those are really deadly. Insect asbestos.

[thebruce87m]

Bought this stuff for a flea infestation but couldn’t bring myself to use it. Reminded me too much of asbestos.