Keeping cats off property

Question
Please I am in desparate need of your help. I have a 6 month old kitten. In the last week a particular cat has come into our house 3 times. The 2nd time my kitten stood face to face with this much bigger cat until we rushed out and threw water over the other cat. Now this cat has just been in my kitchen eating my kittens food. My kitten and I scared this cat who jumped out the window. This has now left my kitten vert traumatised. She is hiding behind things and jumps at the slightest noise. May cat has been spayed. Please give me advice on how to stop other cats from traumatising my kitten in her own home!

Answer
Kim,

I do not understand how this neighborhood cat gets into your house?!?! It seems to me the simple thing to do is to keep things closed up so the neighbor vat cannot come in and intimidate your kitten.

What am I missing?

As to keeping cats off your property, I know of no way that works!!!!!!!!!

Best regards... Norm.