I switched mine to 24/7 as per the advice received. I forgot and got zapped, but it's not very strong so no big deal. I check it daily to make sure the wire didn't get bent and that nothing fell onto the wire.
If you got zapped and didn't mind, it's a big deal.
Ideally, you want the varmint to consider it a near death experience. One it won't risk having twice.
Get yourself a voltage tester. If its not showing at least 7,000 volts, you have a problem.