喜欢你家无齿。帮你网搜了一下，除了养只狗之外，我觉得可以试试这几种办法

 

http://forums.whirlpool.net.au/archive/1460568

很多办法。不少人用 cayenne and/or  pepper。 

http://pets.thenest.com/can-mix-keep-cats-urinating-property-8268.html

The Porch

As soon as you finish sandblasting and refinishing your front porch, the neighborhood tomcat comes over and lifts his leg on every corner. You get a whiff of his "perfume" every time you open the window. The first step is cleaning the area thoroughly. Pick up a bottle of enzymatic cleaner from your local pet store. These specialized cleaners break up the enzymes in cat urine that make the area smell like a toilet to animals, even if you constantly clean. Once the urine smell dissipates, fill a spray bottle with white vinegar. If the smell of vinegar bothers you, dilute it with water and make a 50:50 vinegar-water batch. Spray all of the corners of your porch, including underneath. The vinegar smell repels the neighborhood feline gang.

 

https://www.yelp.com/topic/oakland-how-do-i-stop-a-cat-from-urinating-on-my-front-door

1. 

   • Bonnie Z. M.
   • San Bruno, CA

   •  72 friends
   •  3 reviews

   Buy one of the Halloween decorations that make a howling noise when you walk past it.  Our neighbor's cat used to always visit (no peeing though).  Last Halloween the kids put out a tombstone that opened up with a glowing skeleton yowling.    Apparently the first time the cat walked past it scared her so bad she flew up in the air.   She hasn't come near our house since.

   Report as inappropriate

   9/23/2010

    
2. 

   • David K.
   • Pacifica, CA

   •  129 friends
   •  303 reviews

   cayenne and black pepper mix sprinkled once a week, only use if you don't have dog or small children.  it's cheap to get at the dollar store and last you a while

   Report as inappropriate

   9/23/2010

所有跟帖： 

• 谢谢试一试。放个万圣节有感应器的墓碑的主意太棒啦，我怎么没想到呢，这就去买！ -taro_g- ♀ (0 bytes) () 03/08/2017 postreply 19:24:50

• 这个主意好！ -applepiepie- ♀ (0 bytes) () 03/10/2017 postreply 10:46:38