Can I use train/bus travel expenses? I am self-employed in house cleaning and sometimes travel to two to three homes in one day.

It depends, but most (if not all) of these expenses are likely deductible.  If you operate with your home being your principal work place (as a legitimate home office), then travel to your clients to perform work is a deductible travel expense.  But be careful, since you mention an unlimited transportation card, which could have both business as well as personal use.  In the case that some of the use is personal, you would need to determine the percentage of personal use and subtract that amount from the cost of the card.  

For instance, if the card costs $100, and 80% is business use, then you will be allowed to deduct $80.  Keep accurate records if ever the IRS or the state questions your deduction taken.