Zinc phosphide mouse bait should be in well sealed waterproof containers. Always check seals on bait containers (anything could have happened during transport).
A number of Local Land Services staff have stored zinc phosphide mouse bait in their normal chemical store have noticed gas within the shed when they open the door. This must be considered when storing bait in sheds (see recommendation on storage in sheds).
There needs to be adequate ventilation both at roof and ground level if zinc phosphide mouse bait is stored in a closed shed.
Where zinc phosphide is stored in a closed shed, the doors should be opened at least 15 to 30 minutes prior to entry. Note that where it is necessary to store large quantities of zinc phosphide in a closed shed, it is also recommended that you wear a respirator when entering the shed.
The label specifies that storage facilities must:
The label specifies that bait can be stored on farm, but only until the end of the baiting program on that farm. Storage facilities must comply with label requirements. Also see the Zinc phosphide safety data sheet for storgae information.
The label specifies that a full face respirator fitted with a combined dust and gas cartridge must be worn when opening and venting zinc phosphide drums. A full face respirator with the same cartridge must also be worn when handling bait at other times.
Remember to change cartridges at recommended intervals or earlier if you notice any resistance when breathing through the cartridge.
The label states: disposal is by burial in one (1) metre deep pit and covered with soil. This burial site must be specifically marked and set up for this purpose - clear of waterways, vegetation and roots.
Authors: Suzy Balogh, Former Agricultural Protection Officer
Eric Davis, Former Program Leader Vertebrate Pests