The answer to 'when to treat for rodent control' is that the best time to treat for rodents is as soon as you suspect an infestation. Rodents can breed quickly, so it's important to address the problem before it gets out of hand. Signs of a rodent problem include droppings, gnaw marks, and noises in the walls or attic.
Treating for rodents should be done on a regular basis, even if you don't see active signs of an infestation. Experts recommend scheduling professional rodent control treatments at least once or twice a year to prevent infestations from occurring. This helps eliminate any existing rodents and discourages new ones from moving in.