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(5) Summary of the type of premises and methods employed
In clearing premises of rats and mlce:-
Type of Premises Cleared
Dwelllnghouses (mainly In gardens) 431
Food shops and food premises 31
Non-rood shops 12
Waste land and building sites 6
Hospitals and Schools 15
Factories and Workplaces 16
Council Premises (other than dwellings) 10
Miscellaneous 2
TOTAL 523
(6) Methods employed in clearing 523 premises of rats and
mice-
Warfarin and other Poison Baits 523
Trapping -
Gassing 1
Rat and Mouse Proofing 1
Drains repaired 5
TOTAL 530
8 - Sewer Treatments
(1) Treatment No. 22 - Second Maintenance Treatment (1956-1957)
The second maintenance treatment of soil sewer-manholes in
areas found to be infested during the previous treatment was
completed on the 20th March, 1957.
Prebaiting with damped sausage rusks with 0.25%paranitropherol
added as a bait preservative was carried out on the first and
fourth days and the same bait base with 2½% Zinc Phosphide added
was laid on the eighth day with the following results:-
SECTIONS
TOTAL
A
B
C
D
E
Number of Manholes pre-baited
24
Not baited
94
92
34
244
Complete prebait takes
3
23
20
6
52
Partial prebait takes
5
29
12
9
55
Percentage of takes (C. and P.)
33.3
55.3
34.8
44.1
43.8
Number of manholes poison baited
11
62
35
20
128
The number of prebait takes shows an increase of 0.8% on
the previous maintenance treatment.
34