A good professional company should be able to solve the problem without the use of traps. All entry points should be sealed be the company and a written guarantee against re-entry should also be included. I have a whole separate web page dealing with this. Click on the heading. Rabies Skunks are unfortunatly very susceptible to rabies.
Skunks are second only to raccoons when it comes to cases of reported rabies.
The danger, however, has often been exaggerated. In any population, only a small percent may be infected at any given time. According to a few sources I've read, epizootics of rabies can sometimes break out if the local population of skunks is unusually high. Some erroniously claim that all skunks are born with rabies or that skunks can carry the rabies virus for months without showing symptoms. Neither is true.