You’ve probably encountered at least one cockroach in your room or your washroom which scared you to death at first sight. You probably just got rid of that one. But you should know that where there’s one, they’re probably more. So if you spot one, it means you need to get into action. Cockroaches are usually looking for food and will come in places where there’s food. This is why they contaminate kitchens at night. They will only come out at night and leave germs here and there on your counter and shelves. You probably want to avoid that as much as possible. You can’t get rid of them by just spraying in all the corners of the house; you will have to contact professionals. Only they can help you in this.
Ants can also be very annoying as they can appear anywhere. You might be making dough in the kitchen and they’ll appear on the shelf. It can be an annoying situation I agree. Other than these, there are also bed bugs. They won’t go away ever without professional help and really disturb your sleep at night.
There are many other infestations such as rats, mosquitoes, flies, etc. Rats always come in looking for food and will contaminate any food that’s lying without you noticing it. Even if you do see a rat, your first instinct will be to climb on a chair or something. So, to get rid of them, contact your local professionals.
There is not definite way to avoid them except for keeping the house extremely clean and blocking any pathways like cracks and crevices. You can read more about these on EradicateThoseBugs.com and keep your house clean from such pests.