Experiments were carried out at 27 ± 2 ْ c and 65 ± 5% RH, the onion bulbs and garlic cloves were treated by three plant powders, black pepper seed, cumin seed and basil leaves during two successive seasons 2006 and 2007. The obtained results Balady and Giza 20 onion bulbs cleared that, the tested dust powder black pepper seeds, was highly significantly effect in reducing the mites (Rhizoglyphus robini ;Tyrophagus putrescentia and Tydius sp) level infestation followed by cumin seeds and Basil leave was the least significant effect during storage period. Loss of weight for Balady onion bulbs treated with black pepper seeds and cumin seeds less than Balady onion bulbs treated with Basil leave. However, Loss of weight for Giza 20 onion bulbs in the first season for R. robini treated with black pepper seeds less than cumin seeds and Basil leave.The obtained results cleqred also that, the differences between Eriophyes tulipae [Aceria tulipae] infestation of(Chinese garlic cloves and the`effects of the tested dust plant powders, black pepper seeds, cumin seeds and Basil leaves was not effective i~ minimizmng mite population compared with control. Loss of weight for(Chinese garlic clovås treated with blakk pepper såeds less than Jasil leave followed by cumin seeds.