Dimethyl carbate is an organic compound used in the form of mixtures with other chemicals as a repellent for blood-sucking insects such as mosquitoes.

Dimethyl phthalate, an organic compound, is used as repellents. This compound is a pollutant that is very harmful to organisms due to its mutagenicity, teratogenicity and carcinogenicity. It was discovered, that dimethyl phthalate could alter the biological function of the one of the most important bacteria in the environment, P. fluorescens.