The difference between Fleas and Ticks | Dr. Killigan’s

Flea vs. Tick: What You Need To Know

If you have a pet, then you most likely have dealt with the dreaded flea and tick. You have heard about different treatments from pills to collars, but which is the best flea and tick treatment for your four-legged family members? First, we must understand each pest, and how they are harmful, not only to your pet but to your whole family.

What Are Fleas?

Fleas are external parasites that feed on blood. They are relatively small, most around 1/8”. With the unaided eye, they appear as a tiny brown dot in your pet’s fur or on their skin. The bite fleas give can be painful and itchy.

What Are Ticks?

Ticks are external parasites. They also feed on blood but are much larger than the flea. Ticks are flat and oval-shaped, as opposed to the flea’s round shape. Their bite is a bit different (We’ll get into that in a moment) but ticks may carry harmful diseases for your pet.

What You Need to Know

Their size and shape are not the only differences between the two.

  • Species and Habits – Fleas are wingless insects. They have the ability to jump long distances. Their bites are quick, and they move on. Ticks, on the other hand, are part of the arachnid family. Yes, they are basically spiders. Their bite is not like the flea. Instead of a quick bite, they bite and hold on, often burrowing their head into the host. They remain still most of the time and are not as active as the flea.
  • Life cycle – Fleas and ticks have very different life cycles. Fleas live around 100 days. Their entire life is attached to one pet. They will hardly, if ever, transplant from one host to another. In contrast, ticks frequently move around from pet to pet, pet to person, and person to pet. They will live between 3 weeks to 3 years.
  • Infestations – Ticks are primarily outdoor pests, but will make their way inside riding on your pet. They do not make a house their home and generally do not cause an infestation. Fleas can thrive within a home. They spend most of their adult lives feeding and laying eggs.
  • Diseases they spread – Both ticks and fleas may bite, when may cause extreme itching. When you scratch, you can cause an infection within the bite. However, far worse than an infection, both bites cause disease. A flea bite carries various diseases, primarily tapeworm. Ticks spread Lyme Disease and Rocky Mountain Spotted Fever through their bites. This is something that would need immediate attention. Please note, use your best discretion and contact a medical professional for help.


To rid your pet and home, you need a proven flea and tick spray. Pills can get expensive, and collars, dips, and other treatments can be harmful to your pet, children you have in the home, and your health. Dr. Killigan’s understands the bond between pet and parent. We have developed Six Feet Under ™ ,  flea and tick spray that is 100% safe and toxin-free. It is a spot-on treatment that is safe enough for everyday use.

The Final Word

When you have an infestation of these over traveled hitchhikers, you need a trusted flea and tick spray for home use. Dr. Killigan’s Six Feet Under ™  is a cottonseed and clove essential oil mixture that is used in areas where flea and tick activity has been discovered. Our formula is in line with our long standing company creed of “Killing Them Softly™,” meaning that we do not use any harsh chemicals in any of our products. SFU is safe to use around food areas and can be sprayed directly onto your pet.


As with all Dr. Killigan’s products, there is a 100% satisfaction guarantee. If you are not happy with Six Feet Under ™  give us a call and we will not hesitate to do what it takes to make things right.