This might not be a "cut-and-dried" situation. If you are dealing with a trapping program on a commercial basis (charging for the service), the corporation will dictate what level of insurance is required. Your agent has nothing to do with their requirements. His involvement is nothing more than sending an e-mail or fax with the proof of insurance document showing you meet their criteria.
I've done work for a lot of corporate accounts, and they all vary. The minimum liability policy is usually 2 mil, but I've had one request a 4 mil policy. They will typically provide you with the details. Make sure to get ALL the info before you provide a price quote!!! Most will require you add their name to your policy. Many will require EVERY vehicle that enters the property be commercially insured. Power plants and other huge corporations will require a ton of paperwork/forms to be submitted for review before you can set foot on the property.
However, if you are going to provide trapping under a fur trapping license, some will allow it without insurance, depending on state laws regarding liability. Even though in my state the landowner is supposedly "safe" or insulated from liability issues if a sport trapper is helping them out, only a few will let you on the property to trap for fur value only.
Some will have someone in higher management check into the state laws and determine the risk factor. The larger the company, the smaller your chance of getting in to fur trap. However, I have a couple fairly local that let me in every year to fur trap (beavers, muskrats, raccoons) and they even provide me keys to all the security gates. These are not gigantic companies.
What I have found is if the person in charge of making the decision about fur trapping (without insurance) is a hunter of some type (deer, duck, others), those are the sites that I'm allowed in for winter fur trapping. Seems the hunter-type guys are aware of the state laws protecting landowners from sport hunters/trappers, and are more likely to give you a green light.
On the flip-side, if you end up dealing with a city dweeb (yep, yuppie) your chances are slim. If his fingernails are clean and it looks like he just returned from his manicure, you're not going in. (Call me judgemental, but I have 35 years of personal "data" to back me up).
On the sites where they will not allow an issue to be dealt with during fur season (for fur value), they typically still want the issue resolved and you end up doing it commercially, which is MUCH better for you as far as money (unless your living in the 1950's).
