As part of the agreement, the active ingredients used in the pesticides are still manufactured by Bayer and supplied non-exclusively to SC Johnson.

[1][2] Baygon products contain the pyrethroids cyfluthrin, transfluthrin, cypermethrin, prallethrin and the carbamate propoxur and organophosphorus chlorpyrifos, as active ingredients.

[3][4] In the concentrations used in consumer product insecticides, pyrethroids may also have insect repellent properties and are generally harmless to human beings in low doses but can harm sensitive individuals.

[5] If ingested in sufficient quantities, they can lead to a variety of ill effects, including tremors, dyspnea, and paralysis.

[6] The active biocide in Baygon, prallethrin, while considered effective as a mosquito repellent, has been flagged by the WHO and in other studies, as "highly toxic" to honeybees and fish.