I have a pair of Rough scaled Sand Boas too! Photo below of Kala, the female, climbing around one of her favorite enrichment items.
I haven't tried the links with the Sand Boas - I just feed them mouse fuzzies. Kala in particular was tough to get established on a regular feeding routine, so I guess I am just cautious. It's been over two years, though, and both snakes are well habituated to me (I do a lot of behavioral work with my snakes) so maybe I will offer them a quail or quail/rabbit link and see what they think.
The quail or quail/rabbit links are the only variety I've ever used. As far as colubrids, my Kingsnake and Hognose love the links. My only other colubrids are garters, and they are not fans of the links. They'd probably go for the frog links if I had them; I have just never bothered to get that variety as most of my snakes are not really big amphibian eaters, and the garters get good variety between mice, nightcrawlers, and salmon.[IMG][/IMG]