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Sewers
4. Were any sewers infested by rats during the year?—Yes.
Surface Properties and Sewers
5. Any other points of interest?—None.
Baiting of Sewers
No routine baiting was undertaken during the current year.
Warfarin Resistance
Over the past few years it has been established by the Ministry
of Agriculture, Fisheries and Food that Warfarin resistance by the
house mouse has been increasing and now extends to South East
England and includes, in particular, the London area.
This genetic change of the mouse has presented a challenge to
the rodent control staff, which they have met by using alternative
methods of control, such as the narcotic Alphachloralose and
various rodenticidal dusts. Acute poisons such as zinc phosphide
and arsenic have been used on a limited number of occasions
where it was considered there was no risk of danger to the public.
The use of these alternative methods of control has however,
increased both the time required and the number of visits carried
out by the rodent control staff in order successfully to rid the
premises of the infestations.
Control of Foxes
From time to time foxes have been the subject of complaints
especially in the Charlton Park/Brook Hospital/Greenwich