All good answers.
I’d recommend part time at first. You don’t have to do all the big jobs like your competitors might be doing. Make enough money to buy more and better tools, personally I avoid debt like the plague. Been in debt before with school loans and I don’t care for it anymore.
Do what you tell your customers you’re going to do, major key.
Do enough and learn to price it. In almost all instances you will think your price is good until you find out what others are charging.
Do good inspections. I don’t think any of the large companies would publicize it, but if you catch the right animals and close the right holes you will solve the problem just as good, if not better, than the companies sealing up everything who don’t care about catching the correct animals (not including bats, or mice and rats, full seal ups are certainly required in some instances unless you want to trap or bait them forever like a pest control company). For instance, multiple times I have seen a company go and catch 40 gray squirrels at a house and then leave. Customer had problems the next day. Both times I went in caught, 4-5 squirrels and closed the hole. Problem solved.
In some instances I run into things that are out of my league or just require more man power and I refer them to someone else who has the manpower. In return, they send me a lot of work that might just be trapping. They don’t have time for it because they are working on large seal ups.
I worked two jobs for three years before I quit the job I got a civil engineering degree for. I could’ve quit sooner, but I think I was addicted to working 14 hours a day by that time lol. I also didn’t want to have a big pay gap by quitting. As soon the income from ADC exceeded my other job I got out.
Once I left that job, I got more time and sealing up extra areas is more feasible now because I have 10 hours extra time in my days. My average job cost has greatly increased due to this.
Work hard, treat people right, be careful, and learn every day.