| 摘要 |
<p>A chemical heat pad 12 for an insect trap 10. The pad comprises an air tight protective packaging surrounding a chemical heat pad. The chemical heat pad comprises a semi-permeable membrane which is filled with chemicals, which on activation by oxygen, following the removal of the protective packaging cause both, heat, including infrared heat, and water vapour to be generated. The pad will, over at least an 8 hour operating span, maintain a pad surface temperature at between 40 {C and 20 {C and a relative humidity at least 10% higher than the prevailing humidity. The pad is used within an insect trap to mimic the characteristics of mammalian bodies and is used in particular to attract bed bugs. The pad may contain iron powder, activated carbon, sodium chloride and a bound source of water.</p> |
