Quick Scoop: FBI Evidence Response Team agents do not wear hazmat suits on a regular schedule; they use protective gear only when the scene calls for it, such as contamination or hazardous-material risks. Public reporting on ERT safety practices describes layered PPE like Tyvek suits, gloves, masks, and eye protection, with “hazmat suit” use being more of a special-case event than an everyday uniform.

What that means

  • Most ERT work involves standard crime-scene protection, not full hazmat gear.
  • When there is a chemical, biological, radiological, or other dangerous contamination risk, more extensive protection may be needed.
  • The exact frequency is not published as a routine number, and it likely varies a lot by assignment, field office, and incident type.

Plain-English version

Think of it this way: an ERT agent’s default outfit is “whatever PPE fits the scene,” not “hazmat suit every time.” In practice, that usually means suit layers, gloves, mask, and eye protection for evidence handling, with heavier protection reserved for rare high-risk scenes.

TL;DR

Not often — hazmat suits are rare, situation-dependent gear , not a regular part of FBI ERT daily wear.