Pochemy.net
pets Animals

Why do they have pills for animals that prevent insect bites (frontline, comfortis) safely, but humans do not?

Mark Sterling
Mark Sterling
Research Editor · Feb 28, 2026 · Updated Apr 13, 2026

They don't prevent insect bites, they kill the insects. Frontline and Comfortis are essentially "pet pesticides". They work poisoning the fleas.

113
Words

1 min
Read Time

#77
of 500 in Animals

+66%
vs Category Avg

The Short Answer

They don't prevent insect bites, they kill the insects. Frontline and Comfortis are essentially "pet pesticides". They work poisoning the fleas. The fleas can still bit the cat, but they end up getting poisoned. Fleas are particularly attracted to furry animals because the fur provides shelter and protection for them and they have all the food that they can eat. Humans on the other hand are not covered in fur or hair, so we don't need to take flea medication because fleas won't live on our backs. However, we do have lice shampoo if we ever get head lice or crabs which acts in a similar way to how Frontline and Comfortis act.

Analysis

Key Concepts: Fleas, don't, frontline

This explanation focuses on fleas, don't, frontline and spans 113 words across 7 sentences. At 66% above the average Animals explanation (68 words), this is one of the more thorough answers in this category, reflecting the complexity of the underlying question.

What This Answer Covers

The explanation opens with: “They don't prevent insect bites, they kill the insects.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 7 connected points.

How This Compares in Animals

Ranked #77 of 500 Animals questions by answer depth (top 16%). This places it in the comprehensive tier — the top quarter of most thoroughly answered questions. Questions at this depth typically involve multi-faceted topics requiring nuanced explanation.

Frequently Asked Questions

Is there a simple explanation for why they have pills for animals that prevent insect bites (frontline, comfortis) safely, but humans do not?

They don't prevent insect bites, they kill the insects. Frontline and Comfortis are essentially "pet pesticides". They work poisoning the fleas. The fleas can still bit the cat, but they end up getting poisoned. Fleas are particularly attracted to…

How detailed is this explanation compared to similar Animals questions?

This is one of the most thorough answer at 113 words, ranked #77 of 500 Animals questions by depth. The key concepts covered are fleas, don't, frontline.

What approach does this answer take to explain they have pills for animals that prevent insect bites (front?

The explanation uses root cause analysis and contrasting perspectives across 113 words. It is categorized under Animals and addresses the question through 2 analytical lenses.