Flea and tick season will start with the onset of spring in late March to early April. However, depending on how far south you go, it may end in either November or December according to when the temperatures drop for winter.

The cooler, drier winter weather will offer your pets some relief, but it is crucial to treat against fleas throughout all seasons. Summer is one of the most active times for fleas and ticks, with some of the worst season being fall, in September, October, and November.

Spot-ons are insecticides that come in a small tube of liquid. The product is applied directly to the skin, usually over the shoulder blades or down the back.

Temperature and humidity play a big role in creating the perfect climate for fleas and ticks. The ideal temperature ranges from 75° to 85° F and around 90% humidity. Both thrive in warmer climates and fleas are particularly favorable to humid conditions. Fleas are most active in the early spring, summer, and fall.

The worst time of the year is during late summer to late fall, from September through November. At What Temperature and How Quickly Do Fleas Die? Adult fleas die at temperatures colder than 46.4°F (8°C) and hotter than 95°F (35°C).

Adult ticks, which are approximately the size of sesame seeds, are most active from March to mid-May and from mid-August to November. Both nymphs and adults can transmit Lyme disease. Ticks can be active any time the temperature is above freezing.

Fleas love to thrive in warm, damp conditions and proliferate throughout what is known as the 'flea season', typically running from Spring to early-Autumn.

Fleas and ticks are parasites. They find hosts (both people and animals) and sustain themselves with nutrients from the host's blood.

These products can be in the form of pesticides, repellents, or growth inhibitors. Each of these types of preventatives tackle pests at different lifestages to prevent infestations. Some products are only effective against one species, typically fleas. These include products such as flea dips, baths, and powders.

Treat All Pets in the Household To prevent reinfestation, you will need to attack every active host and potential host of the fleas. That means treating every pet in your house as well as the house itself. If you are treating the dog, the cat still may have fleas that can infest your dog and your house again!

Any warm days, fleas and ticks will thrive. Fleas can be seen all year round. Here are a few facts on how fleas can stick around. If your pet or house had fleas in the summer, and they were not properly treated, you're going to have fleas during the winter months as well.

Fleas tend to prefer a temperature that is 70°F or greater, but ticks and fleas can still survive cold weather in the winter. Fleas thrive in warm temperatures and high humidity - perfect parameters for both their activity and their reproduction.