Breeding sites for the tiger mosquitoes, for example, should also be avoided. Tiger mosquitoes usually breed in small, standing pools of water such as flower stands or watering cans. "It is therefore recommended to check balconies and gardens for possible breeding sites and either remove them, cover them or clean them regularly." According to the information provided, the tiger mosquito is not a native species, but has also been established in Berlin since 2021. There is a risk "that it could pick up dengue, chikungunya or Zika viruses when biting infected travelers returning home and spread them via further bites". The risk of transmission to humans has so far been assessed as low.