Yes, you can apply Suspend SC inside and outside residential and commercial buildings without a license, as long as you are applying to your own home or property, or you are not applying for profit.
Suspend SC is great at killing most insects, including fleas, but it is not labeled to apply all over floor coverings which is normally what is required for treating fleas. We do have an Indoor Flea and Tick Kit which can also be used indoors. This is our most popular flea control product. In addition to applying this indoors if there is an issue, you should have your pets treated.
Suspend SC will kill Daddy Long legs that come into the treated area.
No, Suspend SC is a crack and crevice treatment only and is not labeled for scabies. Scabies mites live on/in the skin and we do not carry anything to treat humans. Most folks need to visit their doctor to receive the medication needed to get rid of scabies. You may spray your furniture with a product such as Steri-fab to kill anything on furniture, though treating the home is usually not necessary.
Suspend SC will kill adult fleas. To take care of the immature fleas, you want to incorporate an IGR. You can mix in Precor IGR with the Suspend and water. Please see our Flea Guide for the best tips and videos for Flea control and prevention. You should also be sure to treat the animals with products approved for this use.
Suspend SC is a great choice for ladybugs. Below is more information on treatment for this insect.
http://www.domyownpestcontrol.com/lady-bugs-c-135.html