Keeping animals and insects away from your organic garden

I saw this topic in the FAQ in your site. We have problems here with
roaming horses and cattle. I tried the following and it worked for
me.

I blended 500gms of garlic, 500gms ginger, 500gms of chillies (hot
pepper), and 200gms of chilli powder and mixed it with 75 liters of
water. I sprayed it on my garden and around the garden and it did 2
things.

1. It kept the cattle away. They came and walked around the border
of my garden up till where I sprayed the mix. They kept off for
about 4 weeks.

2. It kept insects away from my vegetables as well. Even mosquitos
were gone for about a week.

Hope the above works for Deer as well.