my male cat has started uranating evrywhere

I want to say I agree with Cat about feliway it is amazing how well that works, I use the spray.

Hi Deone

There are many reasons why a cat may start to urinate in the house, both physical and behavioural. It is important to rule out the physical problems first, which most commonly is cystitis. Cystitis is a painful inflammation of the bladder. The cat feels like the bladder is full all the time but it is painful to urinate. The classic symptoms are a cat who is urinating little and often, in different places and possibly with blood. The cat varies the place they urinate because they don’t think that it hurts when they wee, they think the floor as jumped up and bitten them! This is why they will often chose very soft surfaces to urinate on, such as the sofa or the duvet. The first thing to do is to take him to the vets and have him checked over. If you can, collect a urine sample before you go.

The other very common cause of inappropriate urination in cats is stress. Cats will often urinate as a comforting smell to reassure themselves in their own home. If the cat has been frightened or intimidated by a cat outside you will often find they urinate around the inside of the doors or in that area. Some cats become upset if new objects are moved into the home, or if things change. They will urinate on new things, which can become expensive if they are large items of furniture! Another thing which seems to upset cats is plastic bags, many cats will spray or urinate on plastic bags left lying around.

The most important thing to do is to find the trigger for the behaviour and try to lessen its effects. If a strange cat s in the garden or coming into the house, discourage it from doing so. If there is tension between the cats already in your home, take steps to lessen the stress they are under. This will involve things like ensuring there are at least one more litter trays than there are cats, having at least two feeding stations and discouraging rough play. Look out for a blog coming soon on how to make your house feline friendly! Also, place Feliway diffusers (available in the Petstreet shop) in your house where your cat spends most of his time, these are pheromone diffusers which will help make him feel more secure in his environment.

It is also vital to clean the urine correctly. Normally we would use a normal household cleaner. However, most of these are based on ammonia, which is also the basic ingredient of urine! Cats will ignore the ‘pine fresh’ and ‘lavender’ and simply smell the ammonia. To them it simply smells of urine and therefore a toilet! Clean the area with soda crystals and (if the surface will take it) surgical spirit. This will eliminate the urine smell. Other things that can be helpful, particularly if they use one spot, is to place some cat food in the area stuck to a card covered in tin foil. Cats will rarely urinate where there is food and they dislike tin foil

I hope this helps you, if you have any more questions, speak to your vet. They will be able to discuss this in more detail and give you more specific advice.

Cat

If his sister is not neutered also, then the answer is simple -- he´s marking his territory.
have you two litter trays? not close toghether? He may want his own!

otherwise, get him to your vet, if only to check there is not something wrong.