The evaluation of acute toxicity of three slow-release pelletised edible essential oils (SRPEEOs) extracted from clove (Syzygium aromaticum (L. Merr. and L. M. Perry), West African black pepper (WABP), (Piper guineense Schumach. and Thonn.) and Ginger (Zingiber officinale Roscoe) on the bean bruchid, Callosobruchus maculatus (F.) infesting cowpea, pigeon pea, Bambara groundnut, Lima and Soya beans. The research was conducted under laboratory conditions at the Faculty of Agriculture, Nasarawa State University, Keffi, Nigeria. Evaluation of the SRPEEOs on susceptibility and lethal concentration (LC50) was conducted using 0.25, 0.5, 0.75, and 1.0 g/5 g legumes. The treatments were replicated three (3) times, and the experiments were laid out in a complete randomised block design. Data analyses were conducted using Statistix 10, an analytical software package, in a two-way factorial analysis. All data were transformed before analysis. The results of the LC50 showed that WABP SRPEEO caused the highest mortality of bruchids (LC50: 1 g/5 g) compared to 0.25, 0.5, and 0.75 g/5 g for clove and ginger, respectively. The three SRPEEOs were very effective in conferring protection on the legume varieties against infestation by the bruchid and can also serve as an alternative to synthetic pesticides. However, SRPEEOs from WABP proved to be more effective and can thus repel colonisation of legumes by the cowpea seed bruchid.