In recent work Moessner and colleagues have demonstrated that thermally induced defects in spin ice behave as emergent magnetic monopoles. Within the material there exist magnetic "charges" and we suggest that a signature of this may be found by measuring the muon relaxation. Specifically it has been predicted that a high density of magnetic poles will be swept to the surface under applied field. Therefore we would like to measure the field lines emerging from the poles in a thin silver foil adjacent to the sample after a magnetic field has been pulsed on. Moreover once the magnetic field is pulsed off a measurable relaxation is expected. We have previously shown that this method of exterior muon implantation can assist interpreting conventional MuSR measurements as well as providing a useful contrast to bulk magnetization measurements.