Is there anyone who knows of a more cost effective solution?

These are complex homes built to the California Building Standards Code that require installation and finishing to meet the regular California Building Code.Pedro's solution of trying to contact the manufacturers directlyThe manufacturers of modular homes (almost as a rule) don't sell directly to homeowners, so this is really a pointless loop that he is sending you on. 

Best solution to cat pee I am aware of.

So I would say you should pick an area where you can build a good real-estate team and can monitor the changes easily.

Anyone have a better tech solution? 

I know I am facing an financial uphill battle in particular when starting out in this industry, however I am choosing to look at this as an opportunity to learn and find a solution that works for us.

I have been looking everywhere for a good solution, but cannot find an easy way to locate and setup about 50 machines as the owner is requesting.Does anyone have any experience doing this?  

At a minimum a book-keeping/accounting service should handle -* System set-up (Quickbooks is a fine solution for most)* Data entry/general journal log keeping* Month-end reconciliation* Quarterly report* Quarterly tax filing (Payroll, etc.)* Yearly tax returnsA full service accountant should also handle -* Accounts payable* Accounts receivable* Weekly/biweekly reporting* Project reportingOne of the biggest regrets I have is not having gotten a good book keeper earlier in my business.

Who pays for the monitoring?

I think this might be a great solution for her.