I’m curious what signs people usually notice before calling a professional pest control team in London. Is it normally seeing the pest itself, or are things like droppings, unusual noises, damaged food packaging or small holes better indicators?

I imagine some problems can go unnoticed for quite a while, especially with rodents or insects that stay hidden. It would be useful to know which warning signs are worth taking seriously and when it makes sense to get an inspection rather than waiting for the problem to get worse.