Very quick, straightforward process - submitted online application and then received a 15 minute phone screen from the hiring manager; the interviewer was quite nice and was between myself and a Hiring Manager + a Senior Manager received a call after 3 weeks of the interview and received an offer - questions weren't too out of the ordinary: introduce yourself, why ecolab, why the internship, what skills, etc.

Pretty Straightforward asking more detail about previous finance stint as accounts payable clerk and also my NS experience. They also asked about my interest in applying to Ecolab and what do I know about Ecolab.