Take your point but these are as supplied with the original units, not copies, all of mine have been bang on so far and all show the same temp across a range of smokers so no real issues there. Besides, when I want to know the temp of the food I use a good quality 'instant read cooks probe'. The other unit probes, are, in my opinion, really only a guide and are used as such. Wipe em down with a damp cloth after use and the jobs a good un as they say. And obviously don't put them directly on the coals but then who would??