eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-05-05 7 2 725 728 9155 article Kh. M.S. Al-Ghamdi1 1 M.S. Saleh 2 Z.I. Al-Fifi 3 J.A. Mahyoub 1 Department of Biological Science, King Abdul-Aziz University, Jeddah (KSA) Department of Applied Entomology, Fac. of Agric., Alexandria University (Egypt). Department of Biological Science, Jazan University, Jazan (KSA). The effectiveness of slow-release formulations (SRF) of Altosid XR-briquets, Du-Dim tablets and Bactimos briquets on the larval stages and pupae until adult emergence of Aedes aegypti was studies. The records showed that the test SRF provided continuous effective control against the present mosquitoes for several weeks. Excellent control with 90-100% inhibition of adult emergence was achieved for 96, 73 and 35 days posttreatment by using Altosid XR-briquets, Du-Dim tablets and Bactimos briquets, respectively. Variations in the duration of effective control among the test formulations may reflect differences in their active ingredients and mode of action. On the other hand, larval treatments with the present SRF proved to be relatively safe to the nontarget organisms associated with mosquito breeding sites such as Odonata naiads, aquatic bugs and diving beetles. https://www.biotech-asia.org/vol7no2/larvicidal-effectiveness-of-three-slow-release-formulations-against-aedes-aegypti-the-vector-of-dangue-fever-in-jeddah-governorate-saudi-arabia/ Aedes aegypti; Slow-Release Formulations; mosquito larvae