i don,t have a problem with them ,winter or summer , most of my trapping is done thru spring and summer, but i have had plenty of big (4lb+) rabbits in the fenns in winter and they hardly moved the trap, depending on the place ,sometimes i block everything and trap any opened up holes the next day , sometimes i trap the best holes and block the rest, sometimes i just trap the best holes and leave the rest alone...at this time of year if i set 30 traps , i would expect somewhere around 30 rabbits in 3 nights, thats just how it works out , mid summer you get a few more than that cos of rabbit nu