Sierra Natural Science Systemica Insect Killer

While a standard contact spray only kills insects present at the moment of application, this formula is absorbed into the plant's vascular system. This creates an internal barrier that protects the plant from future infestations, rather than just treating the immediate problem.

Yes, because it is an OMRI-listed organic formula, it is safe for use on fruits and vegetables. You can apply it as directed without worrying about harsh chemical residues on your harvest.

Absolutely. Since the formula is designed to be free of chemical fumes and staining, it is an excellent choice for indoor use on ornamentals and houseplants.

No, this is a ready-to-use formula. It comes in a 32-ounce spray bottle, so you can apply it directly to your plants without any mixing or preparation.

The formula is rain-resistant, meaning it will hold up against light exposure once it has dried on the plant. However, for the best results, avoid applying it immediately before a heavy downpour.

You can do both. While spraying the foliage is effective for contact, applying it to the root zone allows the plant to absorb the active ingredients systemically for more comprehensive, long-lasting protection.