This blog article is a must read before you begin your pet sitting journey. It will cover some of the hazards of the job when it comes to pet sitting.
https://www.petcloud.com.au/d/blog/how-to-decide-whether-to-take-on-a-pet-sitting-booking/
Taking our Online Pet Sitting Course, created with the help of RSPCA Senior Vets will also give you the confidence to understand this.