Don't touch this doorknob unless you're a doorknob—it's covered with nitharit. Not even Sprugtooth knows what nitharit is.
Detect: Per-based Traps at -5.
Disarm: DX-based Traps at -3. Failure triggers.
Circumvent: DX at -5 to turn the knob without touching the poison.
Effects: Resist HT at +1 or after 1 minute, lose 2 HT for each point by which the victim failed to resist.
Rearm: Yes, if you have more poison.