1. Consider your cat’s personality before introducing a new cat.
An active cat is more likely to accept a new kitten. A quieter
cat might prefer a mature adult.
2. In general, the following combinations of cats seem to work
best: two kittens; a mature, neutered cat and a kitten; or,
two mature, neutered cats (either two females, or a male and
a female). The most potentially volatile combination seems to
be two uncastrated, mature, male cats.
3. Territory is important. Reduce tension by making sure each
has enough personal space and possessions to meet his needs
for territory.
4. Have at least one litter box on each floor of your home.
Consider placing litter boxes in various locations to avoid
the exclusion of one cat from another cat’s territory.
5. Keep scratching posts and beds in several locations to
accommodate all the cats in your household. Multiple bowls
of clean, fresh water is also a good idea.
-- Unknown
A common complaint of male cat owners is their careless use of the litter box. It is not uncommon for some cats to inadvertently urinate over the sides of boxes and, unfortunately, not all cats will use a covered box. In these cases, consider using a polyurethane storage tote. The sides are often much higher than those of the available litter boxes and will likely remedy the situation.