If there is actually an infestation, that's probably on you to repair. 

Typically they purchase with cash for a few different reasons: better deals if bought in cash, off market deals for cash buyers only, property in too rough of condition for regular financing, etc.

Doing the interior repairs with tenants in place can be tricky. 

I typically bid on the properties that have the highest chances of not being redeemed, in most cases these properties are worth 10K-50K.

- Do I pay for repairs?

Be sure to set money aside for potential repairs and cap ex. 

The triplex was renting out with no major issues for about three months and then the island got hit with some serious weather, which exposed some leaks in the roof, I would like to get the roof fixed before the next rain season starts; so I would like to know if their any programs or grants available for people that are renting to housing assistance programs to assist with home repairs etc.Thanks Duane

In your example above, its that 2-year period of exposure thats concerning where you owned homes built in the 1970s and were responsible for maintanance and repair.  

Take this deal and run.Remember to take out money for vacancies, repairs, management (if needed) and CapEx.That being said.

I typically see $300 - $600+/month in net positive cashflow if you get a 3 bedroom.I have interest in mid-term rentals.