As for my business, I conduct it in the following manner:

I use shamanic methods such as “feeling out” using intuition or psychic awareness.

I need permission to be on the premises beforehand. I have had clients in the past call me to areas that was trespassing!

I use smudging tools and herbs that help clear our negative energy/spirits. Which involves small amount of smoke/fire.

I do not use electronic devices, as they interfere with my energetic aura. I prefer to have all TV’s, computers, cellphones, microwaves put away or turned off during investigation.

If something serious is involved, I try to provide the client with documented research.

I do not shout or show anger towards spirits. I have other means of “pushing” them out if necessary.

I may ask information about people in the area, such as age, profession, personal interests, and astrology signs if possible.

I do charge a small base fee depending on travel distance. As I am using my own time and gas to arrive at the destination.

I have in the past, given ghost stories to journalists and TV directors to the Syfy network. I am listed on the paranormal societies website as a registered psychic for research.
Also see my website for more details