The "citronella plant" is a geranium plant markete as "Pelargonium citrosum", but according to the American Botanical Council, " 'Pelargonium citrosum' is not a valid taxonomic designation." "Pelargonium citrosum" is marketed as a mosquito plant, or citrosa geranium in stores in the United States and Canada, but research indicates Pelargonium citrosum is ineffective against Aedes aegypti mosquitos. "Not only was the plant ineffective at protecting humans against Aedes mosquito bites, the mosquitoes were seen landing and resting on the citrosa plant on a regular basis."