Poisonous baits are the pesticide that is the mixture of food & something toxic that have lethal activity against targeted pests. The food is usually acts as attractant.

Insect baits are made of some type of attractive food product that has been combined with either an insecticide or insect growth regulator (IGR). IGRs don't kill outright but rather disrupt insect or colony development by preventing immature insects from completing growth to the adult stage. Baits are generally used in pest control situations where one is trying to control a social insects, those that live in a colony or nest such as ants, wasps, cockroaches, and termites.

Read More: http://www.livingwithbugs.com/u_bait.html

I have no idea. I am following the question to know about it.

Yes rightly said by Harry

DIY Pestcontrol

Insect Poison Baits and Gels are designed to poison and kill ants, cockroaches, and more. They are more effective than powders and sprays because they target the pest at source. It may be satisfying to kill a few ants with a spray, but it is essential to get the poison to the nest in order to eradicate the colony. Pests see the bait as a food source and ants carry it back to the nest to share with the rest of the colony. Cockroaches ingest the bait and return to the nest where they die and are eaten by the remaining roaches. The result is a domino effect. Insect poison gel can be applied in hard to reach places such as along baseboards, in cracks and crevices or up high

The use of food that insects like sugar or non-Shi attracts insects and then mixed with poisonous pesticides such as Kramkson

Poisonous baits are the pesticide that is the mixture of food & something toxic that have lethal activity against targeted pests. The food is usually acts as attractant.

Dear Professor,

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Article Toxicity of fruit fly baits to beneficial insects in citrus

Using Insecticides:

Which are divided according to their effect to: Poisons:

These substances cause the insect to die when eaten with or when it is touched, such as arsenic, nicotine and methyl bromide . materials Repellents: It compounds that are used to drive away insects because of their taste and smell or repulsive and undesirable insect color . materials Attractants : Unlike its predecessors, it works to attract insects, which are interconnected with other ways to catch or eliminate insects.