Organic pesticides are compounds derived from plants, shrubs, and herbs. Many plants contain natural deterrents and fungicides to help them to remain healthy and disease free. Plant extracts can be powerful---their protective mechanisms have enabled plants to survive for thousands of years. Some farmers and gardeners have opted to use organic pesticides because they tend to be less harsh on existing vegetation than chemical pest killers. Organic pesticides tend to repel harmful bugs rather than kill them.

Garlic Based Sprays
Garlic is a powerful bug spray. Critters like red spiders try to avoid garlic because the smell bothers them. Red spiders like to eat plants, but if they smell garlic they will avoid the plant. Even planting garlic next to certain vegetables can help protect the vegetable plants. Tomatoes in particular are vulnerable to insects so spraying them with garlic water can provide a great deal of protection.

Organic Mosquito Repellent
Mosquitoes can be a real pain the neck, especially during the summer months. These blood sucking bugs love to be around vegetation and water sources of any kind, even chlorinated pools. The chlorine doesn't scare them off, but there are natural mosquito repellents that can keep these insects away. An effective organic mosquito repellent is made from black pepper, garlic, herbs and other oils. (See resources below on where to buy Organic Mosquito repellent.)

Neem Derived Organic Insecticide
Neem also called Azadirachta indica, is one of the most powerful herbs you can find. Neem is a natural antibacterial, antifungal and antiseptic agent. This plant has been used for thousands of years to treat skin conditions and cure ailments. Neem is a popular natural organic pesticide. In ancient days neem leaves were kept with food and clothing to protect them from hungry insects.
Neem is edible and it can also be used to treat internal conditions, but it should always be used with caution because it is very strong. Small children and pregnant or nursing mothers should avoid ingesting neem because it can cause a child to go into a coma. However, using neem externally or as an organic pesticide is perfectly safe.

Make Your Own Neem Pesticide
Neem pest repellent can be purchased online and at some stores. You can also make your own. Buy an empty spray bottle and some pure neem oil. Fill the bottle with distilled water and 4 oz. or more of neem oil, depending on how strong you would like to make the insecticide. Be aware that the smell can be very strong.

Cautions
Even though organic pesticides are safer than chemical ones, you still need to use caution. Even natural things can be toxic in high doses. Keep all pesticides out of a child's reach. Store pesticides high up in a cool dry place and use only a small amount of the solution at a time because a little bit goes a long way.

From Network Resources