Nearly all the homes in LHC, that aren't double-wides or RVs are slab homes with the sewer pipes embedded in the slab before the home is built. It's hard to imagine that a slab in an air conditioned home would get hot enough to affect the beeswax. My neighbors down there are full-timers and their AC is always working. or soon would be if it quit.I think part of the problem may be the way water is routed throughout the house. I've never really seen a house with water lines embedded in the slab throughout the house. Typically, the water lines are routed through the attic and between that and the fact that water lines are shallow enough to where they will let the water get fairly warm before it even enters the house and couple that with lines running through an attic that can get extremely warm during hot months, you can end up with 100° + water refilling a toilet bowl. I am of the opinion that is the problem with wax seals there. Might be wrong though.