I have a house that is over 100 years old. The basement walls seem to be made of large stones perhaps flagstone? in cement. There are holes in the basement walls and mice are getting in. Water also comes in and I do have a sump pump. I want to address the issue of mice coming in and find out what else I could do about waterproofing. Do I call a mason? I have read lots of information about waterproofing companies and frequently the comments say that one should not bother painting or stuccoing or doing anything on the inside of the basement walls. Is that correct. This is clearly not a finished basement but I would like it to be a much tigher basement. Whom should I call? How do I get this fixed? Is this going to cost tens of thousands of dollars? I do not have a lot of money to spend on this. Thanks for whatever help you can provide.