London's Pulse: Medical Officer of Health reports 1848-1972

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Edmonton 1955

[Report of the Medical Officer of Health for Edmonton]

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Rodent Control.
Your Senior Sanitary Inspector, as Officer-in-Charge, Rodent Control,
reported as follows:—
The Council have an Assistant Rodent Officer, two Rodent Operators,
the part-time services of a Clerk and appointed the District Sanitary Inspectors
as Rodent Officers.
During the year the treatment of business premises by " Warfarin " was
continued and has proved very successful.
The new method of rodent control has the advantage that the materials
are undetectable by rats and mice, therefore poison shyness does not occur,
and the rodents continue to feed until all are dead. Further, no prebaiting is
necessary and the baiting is continuous.
"Warfarin" destroys the ability of the blood to clot and the rats become
weaker and die painlessly from internal haemorrhage.
The District Sanitary Inspectors in cases where there was a possibility of
the infestation being due to defective drainage visited the premises and tested
the drainage and any defects discovered were dealt with through the usual
channels. In 80 per cent. of the cases defects were discovered and as one can
quite appreciate entailed quite a large amount of work. The following table
gives details of the work carried out during the year.

1. Prevalence of Rats and Mice.

Type of Property

Local AuthorityDwelling-housesAgriculturalAll other (including Business and Industrial)Total
1. Number of Properties inspected by the Local Authority during 1955 as a result (a) of notification or (b) otherwise(a) 5578...32615
(b) 182,504...1,3553,877
2. Number of Properties (under 1) found to be infested by ratsMajor 3-...1013
Minor 2499...12513
3. Number of Properties (under 1) found to be infested by mice159...1676
4. Number of Infested Properties (under 2 and 3) treated by the Local Authority6536...35577
5. Number of Notices served under Section 4: (1) Treatment...............
(2) Structural Works (i.e., Proofing)...............