Biopren BMS (12 x 2.5g Sachets)

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Pharaoh's Ants live in colonies with their nests in concealed places - mainly in kitchens and bathrooms - e.g. in wall cracks, along pipes and around sockets. A single ant nest may consist of several thousands of workers, which are 2-3mm long and yellowish­ brown, as well as several queens - unlike other ant species. Control of Pharaoh's ants requires a special formulation since failure to control all the queens and workers can result in the colony survival. BIOPREN® BMS contains attractants and nutrients as well as an insect growth regulator which has no immediate killing effect but prevents queens from laying eggs and causes disorders in the development of larvae. When BIOPREN®BMS is used, ant colonies die off in 12-14 weeks.

  • Biopren BMS is one of the few insecticides fully effective against the control of Pharaoh's Ants
  • The granular bait is contained in a clear plastic dispenser to provide a clear indication of ant bait take.
  • Easily removable for relocation without any mess.
  • Contains the active ingredient S-Methoprene 0.5%.
  • HSE No. 9366


Cut the end off the plastic pack along the dotted lines and stick each bait station along ants' runs or near the ants' nest. Position so that the opening is at the top. In a small kitchen or bathroom use 2-3 bait stations. For larger rooms use one bait station at least every5m². After placing the baits you may temporarily notice more ants than before, because of the attractiveness of the baits. Replace the bait if it becomes used up, or if it gets damaged or soaked by water. To ensure complete control, it is recommended to leave the baits in place for at least 3 months, even if the ants disappear much sooner. Where it is necessary to reduce the numbers of migrating worker ants immediately, the use of an insecticide spray is recommended at least two weeks prior to baiting with BIOPREN® BMS. Otherwise, the use of another insecticide is only recommended for removing the remaining worker ants once the effects of the baiting programme are complete.


This product can only be used by people who are required to use pesticides as part of their work and who have received appropriate information, instruction and training.

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