For high threat areas, use a solid U-shaped lock, with a tubular lock cylinder. Didn?t keep them and ended up being chased by one really persistent mosquito. They are a beige color, but I think they go well with more that color. 30 oz. I had bought another style at the same time and they were so hard to get clipped in that I threw them away. Since Ive been using this product I havent hit anything outside of my boundary! where it costs 29. I feel these replacements are better than original. The materials feel good, the switches seem solid so far, and the software is great once you get used to it. I will definitely get the larger size when I need to reorder.