Pigeons may seem like no big deal when you're at the park and a few of them perch on the bench next to you, but when they are on your roof, they are something else entirely. Pigeons are messy, leaving their droppings everywhere and spreading disease. It is best to get a handle on the situation now before they make your home their new private oasis.
The first thing you can do to keep pigeons away is to use a variety of different deterrents. Pigeons don't like the feeling of metal or rubber, so placing aluminum foil pans on the area where you see them the most or taping rubber snakes or balloons on perches can keep them out of that area. Pigeons are also afraid of owls and hawks, which prey on smaller birds, so placing a decoy on your roof can also keep them from bothering with your home. While this is more of an extreme measure, you can also use anti-roosting spike strips. Most pigeons won't land on them and harm themselves; they will see the spikes and find somewhere else to perch.
Reduce Food and Water
What attracts pigeons to your home in the first place is probably the food and water you provide them. You will need to adjust what you leave outside and how you leave it there to deter the birds. For example, you might need to empty the bird bath to keep them away until you don't see signs of anymore, then fill it back up for other birds you want in your yard. Start feeding and watering your pets indoors so you don't leave food out for the birds, and always keep lids on your trash cans. Cover your grill as well, since some of the crumbs might attract the birds.
Install Ultrasonic Repellers
Another pigeons don't like are extremely high noises, so if you have an ultrasonic repeller on your roof, they might not bother with it. The sounds that come from these devices are often annoying and even scary to the pigeons, so they will try to avoid them. Make sure you get an ultrasonic repeller that emits sounds for birds specifically, since there are different sounds for other rodents and wildlife.
Contact your local pest control or pigeon removal company if you are still having trouble. They will not only trap all the pigeons in or around your home, but will help you provide deterrents to keep them from returning.