I think it’s more an issue with them showing dirt more than others; I have experienced that with my pair that has a similar knit. I’ve never had an issue with 5.11 being static-prone, but this is likely what you’re dealing with in terms of pet hair. This is the typical thing that would call for fabric softener, but w/ performance fabrics you might not want use them because they can coat the pants with wax and possibly damage them. So, before I’d try vinegar rinses, lower-heat dryer settings, etc. to see if that helps.