Pest ControlQuestion 189 of 319
Under standard exclusion practice, the maximum gap allowed under an exterior door of a food facility is approximately:
a.1/2 inch is fine if the door looks closed
b.There is no recommended limit
c.1/4 inch (sealed by a door sweep)
d.1 inch
Explanation
Exterior doors should fit tightly with no more than about 1/4 inch of gap underneath; this is enforced with a door sweep or threshold. A mouse can squeeze through a gap of about 1/4 inch, so anything larger creates a clear entry path. Exterior doors must also be self-closing.
Law Reference: FDA Food Code Ch. 6This topic, taught in full in the Food Handler Card guide. Food Handler Card — Complete Study Guide (2026) — PDF + EPUB, $9.99 · 14-day refund →
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