Assement of the effectiveness of extracts from Cymbopogon citrus and Ocimum gratissimum on bed bugs

Abstract

This study evaluated the effectiveness and residual effects of extracts from Cymbopogon citrus (lemon grass) and Ocimum gratissimum L. (scented basil) on Cimex lectularius (bed bugs). With the rise of resistance to synthetic insecticides, there is a pressing need for natural alternatives. Various series of laboratory experiments were done to assess the immediate and residual insecticidal properties of these extracts at various concentrations. The results indicated that both extracts effectively reduced bed bug populations, with Cymbopogon citrus exhibiting higher individual mortality rates. Notably, the residual effects of both extracts were evaluated over 24 hours and 48 hour periods, revealing sustained mortality rates of 35% for Cymbopogon citrus and 45% for Ocimum gratissimum. These findings suggest that both plant extracts not only provide immediate control but also increase in efficacy over time, making them promising candidates for integrated pest management strategies. Further research is recommended to explore the mechanisms underlying these effects and to assess their practical applications in real-world settings. This study contributes valuable insights into the potential of botanical insecticides for effective and sustainable bed bug control.