Do any plants deter mosquitos?

There are several plants that claim to repel mosquitoes, however, none of them are very effective. There is the citronella plant which I have four of them hanging around my patio and they don't work worth a darn. There is the citronella scented geranium which doesn't work any better. However, there are some very effective yard sprays and citronella candles and coils that do work when burned.