Another aspect is ethics, if you are not confident enough in the deal to put $1000 at risk, then maybe you shouldn't be doing the deal. 

If the partnership is throwing off ECI, it may be beneficial for the NRAs to invest in the LLC through another LLC taxed as a C Corp.US tax treaties with the UK and Ireland would need to be examined.Creating disregarded SMLLCs for the NRAs might create issues with lost tax credits due to the disparity in treatment between countries. 

I have some questions on a few transactions and I am looking to get some advice on the tax treatment (willing to pay for their time). 

But then again, I’m not offering you a bond nor treatment. :)

Unless the buyer try to negotiate with seller, seller take home 5k more, and the buyer pay 5k less, cut out the middle man.This is not ethical and you have a contract with seller to prevent this from happening, right?

Not to mention the tax treatment. 

TITLE 74  TRANSPARENT AND ETHICAL GOVERNMENTCHAPTER 1 PUBLIC RECORDS ACT74-120.

Someone who examine your facts and circumstances and advise you on tax entity structuring and treatment of payments/expenses.If the washing business is a disregarded entity, there would be no deduction as you're just moving money "from one pocket to the other".If an S Corp or C Corp, possibly, but then we'd have to look at: is the payment reasonable, ordinary and necessary. 

I have not looked into this in depth as I don't have anything that would qualify for this tax treatment.

If rodents are seen closer to the unit, then you'd have to have the area clean of debris anyway before further treatment could be performed.