BCG is a live bacterial preparation which contains modified TB bacteria. It is possible for caregivers to be contaminated....those who administer it use gloves and sometimes masks (if working with the powder.) If you feel that there is a change that you may be exposed to it, it would be a good idea to carry surgical-type gloves, lots of tissues, a plastic bag for disposal, and wash very thoroughly with anti-bacterial soap.
I was able to drive myself home from treatments, but this only took about 30 minutes. I was able to "hold it" for almost the full two hours, but individuals vary. Your dad may want to have a male "bed pan" with him, just in case. He probably won't need it. He will not have a catheter...a very small tube is used to place the BCG solution and it is removed immediately.
I am copying web site information for several patient information leaflets.
www.wales.nhs.uk/sitesplus/866/opendoc/139761
www.webmd.com/drugs/2/drug-94519/tice-bcg-intravesical/details
I liked the format of the one from Wales, so I included it. Please do not panic at the list of side effects...These always must be included, rare as they might be, and most are extremely unlikely.
Good luck to you. Your dad is lucky to have you.
Sara Anne