Is he ALWAYS like this or am I getting some kind of special treatment?

What kind of treatment will provide an ant-free life for at least a year?

Unless you elect special treatment, which probably doesn't have any benefit in this situation, either.

Could we require our tenants to maintain and pay for this treatment in order to avoid any further pest infestations?

Generally, rental income has a pretty good tax treatment.

The only real issue is that you must satisfy the "Qualified Use" requirement in order to qualify for 1031 Exchange treatment. 

Assuming the surrounding parks offer the same amenities.Be very careful with septic systems/ lagoons/ treatment facilities.

If you have a softener or filtration equipment like an iron filter, it'd likely be best for you to setup a quarterly PM from a local water treatment company to ensure your filters are changed out regularly and salt is added to the brine tank - especially if you have a boiler.PM me for a couple references of companies that work in the area...my family's business is in water treatment for commercial and industrial applications in the Midwest, but we have a couple companies we refer residential folks to.

Also if you do have active termites forget what you read and hire a fumigator.Do all repairs through the subfloor and interior walls drywall work is cheap .Your welcome Jesse, I've got a termite treatment warranty so I won't be doing that myself, I just want to get him full access to the crawl...honestly i want to know the full condition of the joists as well since there are active termites I'm trying to get rid of. 

When a tenant moves out any of my properties, I hire a professional pest control company for inspection and treatment.