Implementation of fogging using malathion impacted to insecticides deposited to household furniture in resident. The other hand, Ae. aegypti preference resting on that furniture. The objective was determine lethal concentration of malathion in an emulsifiable concentrate (EC) formulation which have been deposited on furniture fabrics against mortality of Ae. aegypti. The study was true experimental and completed randomize design. Treatment as much as six of concentration levels (0.00; 0.27; 0.29; 0.31; 0.32; 0.34%) and ten replications. The sample were female Ae. aegypti on ovary condition of unfed and bloodfed. Material of fabrics used were cotton, chenille, and blackout. Procedure efficacy test based on WHO (2013). The result showed that between concentration levels gave a significantly different impact of mortality, but between concentration of 0.27% with 0.29% was not significantly. Mortality of Ae. aegypti reached 100% on 0.34% concentration for cotton and blackout, whereas chenille on 0.31% concentration. Lower lethal concentration to kill 50% and 95% Ae. aegypti population were 0.260% and 0.301% on chenille, whereas the higher were 0.296% and 0.337% on cotton, respectively. Conclusion was malation (EC) which were deposited to cotton, chenille, and blackout fabrics as a upholstery for furniture influence on increasing insecticide efficacy to Ae. aegypti.Abstrak. Pelaksanaan fogging menggunakan malation di pemukiman berdampak pada terdepositnya insektisida pada furnitur rumah tangga. Di sisi lain, Aedes aegypti menyukai hinggap pada furnitur tersebut. Tujuan penelitian adalah menentukan konsentrasi efektif malation dalam formulasi emulsifiable concentrate (EC) yang didepositkan pada kain bahan furnitur terhadap kematian Ae. aegypti. Rancangan penelitian adalah true experimental dan rancangan acak lengkap. Perlakuan sebanyak enam taraf konsentrasi (0,00; 0,27; 0,29; 0,31; 0,32; 0,34%) dan 10 ulangan. Sampel adalah Ae. aegypti betina pada kondisi ovari unfed, dan bloodfed. Media kain yang digunakan adalah katun, chenille, dan blackout. Uji efikasi berdasarkan prosedur WHO (2013). Hasil penelitian menunjukkan bahwa antar taraf konsentrasi memberikan dampak kematian yang berbeda nyata, tetapi antar konsentrasi 0,27% dengan 0,29% tidak berbeda nyata. Kematian Ae. aegypti mencapai 100% pada konsentrasi 0,34% untuk kain katun dan blackout, sedangkan kain chenille pada konsentrasi 0,31%. Konsentrasi efektif yang paling rendah untuk mematikan Ae. aegypti sebanyak 50% dan 95% adalah 0,260% dan 0,301% pada jenis kain chenille, sedangkan yang paling tinggi adalah 0,296% dan 0,337% pada jenis kain katun. Kesimpulan adalah malation (EC) yang didepositkan pada kain katun, chenille, dan blackout sebagai bahan pelapis pada furnitur berpengaruh dalam meningkatkan efikasi insektisida terhadap Ae. aegypti.