The occurrence of Lactobacillus and Bacillus genera in the mesophilic stages of compost processing was reported [35]. In the thermophilic stages, the bacterial community becomes more thermophilic, and thermotolerant bacteria such as Actinobacteria [36], Bacillus [37] and Thermus [38] become abundant. The presence of various Bacilli and other Actinobacteria in commercial and homemade composts was also reported [39]. The incidence of common bacterial members like Pseudomonas, Bacillus, Aeromonas and Vibrio in vermicompost is due to their presence in the intestine of Eisenia foetida [40]. Among the seven antagonistic bacteria isolated from various aerobic composts in this study, six were different strains of B. subtilis and one was P. polymyxa.