When dealing with fleas in a multi-pet household, treating dogs and cats at the same time is essential to your success. This is where choosing a product that can be used on both animals is a convenient option.

Capstar tablets kill adult fleas on your pet but do not provide ongoing protection from reinfestation. However, they can be administered to your pet up to once per day, and are suitable for pregnant or nursing dogs or cats.

Comfortis tablets kill adult fleas for a full month and break the breeding cycle by preventing them from laying eggs.

Capstar tablets are suitable for use on dogs and cats from 4 weeks of age, weighing 2 pounds (0.9 kg) minimum. Comfortis may only be administered to dogs over 14 weeks, weighing 5 lbs (2.3kg) minimum, and cats over 14 weeks, weighing 4.1 lbs (1.9kg) minimum.

Top tip: Fleas and ticks can carry nasty diseases, but protecting your pet doesn’t need to be difficult. Use our comparison chart to weigh up the pros and cons of the most popular products.