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3. The solution is to be laid in baiting cups holding approximately 1½-ozs. and to be filled with
1-oz. of the solution. The baiting cups of crater shape should be made of material impervious
to water. They should be so constructed as to be easily lifted from a flat surface with
with gloved fingers.
4. The solution of "1080" either in concentrate or in ultimate solution for use, viz., 0.25%,
shall not be made up in the area of the Port of London Authority but shall be prepared in
suitable central premises and transported to the ship in an unbreakable container.
5. The container used for filling and baiting cups shall also be of unbreakable material and
shall preferably have a device which delivers one ounce of the fluid into a baiting cup
without dripping or overflow.
6. All containers other than baiting cups shall be clearly marked "1080 Poison" in large red
letters.
7. The number of baiting cups laid shall conform to the numbers prescribed by the Health Inspector
of the Port of London Health Authority supervising the operation and shall be carefully
counted and at the end of the operation all baiting cups so laid shall be accounted for and
removed from the ship.
8. The residue of liquid in the baiting cups shall be collected at the end of the operation and
may be kept for further use in a stock unbreakable container, for removal from the ship and
the Port area.
9. "1080" baiting cups shall not in any circumstances be placed on any dunnage or cargo or,
particularly, any article of food. If "1080" points are laid with the permission of an inspector
of the Port Health Authority in the presence of cargo, they shall be so laid as to avoid
any possibility of contamination of the cargo by "1080". This is particularly important in
the case where foodstuffs are present in the area under control.
10. "1080" poison shall not be laid in any part of the ship where men are working and any compartment
under treatment shall, during the period of treatment, be rendered inaccessible or
forbidden of access to any persons other than representatives of the Port Health Authority
and staff of the Operating Company. Whenever "1080" is laid notices shall be posted
clearly visible to any person who may enter the space or may attempt to enter the space,
warning them that poison bait is laid in the spaces. These notices shall be on a white
background and have clearly printed on the surface in large red letters at least the following
words:—
POISON BAIT DO NOT TOUCH
Such notices shall remain in situ until all baiting cups laid have been accounted for and
removed.
11. All rats found at the end of the operation shall be carefully collected in a suitable receptacle
such as a bag and be destroyed by burning.
12. All operators during the operation shall wear rubber gloves and smoking, eating or drinking
shall be strictly prohibited from the beginning to the termination of the operation.
13. The operation shall be under the supervision and control of a responsible operator appointed
by the Company for that purpose, who shall conform to all reasonable instructions by a
representative of the Port Health Authority as to the number of baiting points to be laid, the
method and distribution of the baiting points. The Officer of the Port Health Authority will
be responsible to the Port Medical Officer for the efficiency of the operation and for ensuring
that the precautions outlined in these conditions are fulfilled. Any neglect to comply with
the terms of this paragraph may lead to a refusal by the Port Health Authority to issue a
Deratting Certificate.
Your Medical Officer is pleased to say that there has been the greatest co-operation by these
Servicing Companies in ensuring that these methods and precautions are strictly followed and he
is happy to say that there has been no fatality or incident of any kind.
1080' is also used by the members of your own staff who regularly carry out deratting in
dock premises and on river craft and the following instructions are issued to them:—
INSTRUCTIONS IN THE USE OF "1080" IN THE PORT OF LONDON
RESPONSIBILITY
1. This rests primarily with the Health Inspector in charge of the district.
2. One Rodent Operative only to be the regular custodian of the equipment and the dispensing
of "1080" , its distribution, storage and stock records, under the control and supervision of
the Health Inspector referred to above.
3. Any defective equipment or accidental loss of "1080" must be reported to the Health Inspector
forthwith.
4. All equipment and stock of "1080" to be kept in a locked cupboard or case.
INITIAL PROCEDURE
5. The 6-fluid ounces of concentrated liquid "1080" is sufficient to make up 160 ounces
(1 gallon) of poisoned water at a concentration of 0.25%.
6. Protective gloves must be worn when dispensing "1080".
7. No "1080" must ever be contained in any equipment other than that officially provided.
8. Dispensing must be carried out in such a place and in such a manner as to prevent any spilling
or splashing or other dangerous contamination.
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