Myke, there's tons of rattlers from Pueblo on down south to New Mexico. Any of the SWA's along the front range should be good if their rocky and brushy. I would advise Lake Pueblo SWA in the back of the reservoir, Lathrop State Park down by Walsenburg, or drive Burnt Mill Rd out of the south side of Pueblo which runs to Colorado City. It's a dirt road which I always see either live rattlers or dead ones people have run over on. Both of the lakes I mentioned are surrounded by rocky, cactus and brush filled areas which hold a lot of snakes period both rattlers and other species.
ecu, you can find em up to I believe 9,000 ft although, I haven't seen any that high. The most I've seen have been where the flat eastern plains meet the foothill rolling hills but up to the base of the mountains. Rocky cactus filled country which is hotter then hades in the summer.
Being a bowhunting I've always been fanatical about scent control. Whether it's sprays, carbon clothing etc. I've tried it. The best thing that I have found for eliminating human scent is Betadine. It's been used in hospitals and homes for decades as a defense against infections on minor scrapes and burns. It can typically be found near the pharmacy in any of the major "one stop shop" stores, and a bottle will last multiple hunting seasons.
Before every hunt possible I...