tender for biennial rate contract for general disinfestations services in csl; 1 doing disinfestation by spraying chemicals of approved brand of deltamethrin/ cyfluthrin in the buildings of csl, mainly employees canteen,workers canteen, navy canteen, guest house, meti etc. so as to be proof against house-flies, cockroaches, lizards and such other insects. the ratio is 1:100 ml of water. 2 spraying anti-mosquito chemicals of approved brand of deltamethrin/ cyfluthrin/ gokhilath (cyphenothrin) in the various area inside the csl including csrc complex,csrc auditorium etc as instructed by the engineer in charge. for open area, the ratio is 1:100 ml of water. 3 providing mosquito larval treatment in drainage,ditches and other breeding areas by spraying chemical toxicants temephos 50% ec using high volume sprayers like rocking sprayer/knapsack sprayer/hand compression sprayer etc .complete all as directed by the engineer-in-charge.for drains,polluted water breeding sites etc the ratio is 1:500 ml of water. 4 spraying disinfestation chemicals of approved brand deltamethrin/ cyfluthrin over the nest of bees/insects on cranes/structures/trees of any height in csl estate as and when required as directed by the engineer-in-charge (rate is inclusive of all labour charges, cost of chemicals, hire charges of tools and plants etc.complete).the ratio is 1:50ml of water 5 providing antitermite treatment in various buildings in csl area by injecting chemical toxicants imida chloprid or equivalent through the joints between wall and basement and around wooden doors, cup boards, partitions, wooden members, ceiling etc. wherever termite attack is found and expected so as to destroy the live termites hiding inside and to avoid further attack by termites etc. complete all as directed by the engineer-in-charge. (payment based on treated area). 6 fogging using fogging machine of type duo mini fogger or equivalent of approved brand like aspee,arbuda hymatic etc. by deploying semi skilled labour for operation of fogging machine using chemical of approved brand n-core-125 ulv (ultra low volume) deltamitrin or equivalent inside csl area including csrc complex,csrc auditorium etc including cost of chemical, labour,rental chagres for all machinery equipments etc complete. the ratio of chemical is 100ml / hr. 7 deratting inside offices and shops, canteens of csl by placing rat traps at locations as instructed by the engg. in charge including cost of rat traps, placing food inside the traps, killing rats and cleaning the traps, labour etc complete.the contractor should keep in custody sufficient number of rat traps inside csl.