Bifen IT is safe for ornamentals and for turf grasses, when used at the label rates. Apply at 1 oz per 1,000 sqft for most insects with a minimum of .5 gallons per 1,000 sqft.
Bifen IT is mixed at the rate of 1 oz. per gallon of water for ants. You may want to take a look at our Ant Control Guide for more information and tips on treating and preventing ants.
Bifen IT cannot be used on areas that will be used for grazing by animals. We do carry other products that can be applied for insect control safely on livestock/livestock areas including Hi-Yield Lawn, Garden, Pet and Livestock Insect Control.
Bifen IT is for insects only and will not treat fungus or other causes of spots on plants. It is important to identify the disease on your plants so that you can select a product that will work for your needs. You can contact your local cooperative extension office and speak to the master gardener on staff for help identifying the type of disease on your plants
We are not sure what type of worm would be considered a "red worm" as you have described.  If you are referring to earthworms, Bifen IT is not labeled for earthworms, because they are a beneficial but it may cause harm to them if they contact a treated area.  Though they are pretty protected by the mucus on their bodies. This small amount of product needed to kill tiny insects would not be enough to harm a bird if they were to ingest a worm that would have contacted the product.
You do want to spray Bifen IT over the sod periodically to keep the rest of the population on top of the new sod down.
We would recommend using a product like Bifen IT. It is labeled for over 75 different pests. It is non-staining, odorless, and can be used both indoors and outdoors.
Yes, Bifen IT can be used both indoors and outdoors.
We do not recommend mixing together two pyrethroids such as Bifen IT and a permethrin product. These products are too similar, and you could create a repellency issue rather than allowing insects to actually contact the treated areas. If you want to add something to Bifen IT for faster intiial knockdown, then we suggest a pyrethrin and/or PBO product such as ExciteR Insecticide.