No, nothing that pervasive. Since I've been dousing my bed in insecticide and sleeping in it from the earliest days, I imagine I've kept the population down somewhat. Not enough to stamp them out, clearly, but I expect they would have become a much more serious problem over the last month or more had I not been zealous and enraged from day one. The annoying thing is that a number of times since I've been applying the proper stuff, I've gone to bed and had no sensation of itching at all - enough to make me hope they were all dead, until it started again the next night.
I've ordered 4 bottles of that stuff suggested above. Hopefully it'll come Monday, maybe tuesday. When it arrives, everything's getting a 90C blasting again. I can't wash my quilt because it's far too big, so I'm going to use one bottle to douse it and hang it outside overnight. The next day I'll hand-wash it in the bath at as hot a temperature as I can stand underneath two pairs of marigolds. After I've hung my quilt out and cleared my room, I'll hunt for the nest - another whole bottle is going on that and the surrounding area/furnishings/skirting/anything that remotely resembles a nook or cranny. I'll spray my mattress with a third, and keep whatever's left of that and the fourth to periodically douse the old nest area and maybe my bedding once it's all clean again. Once the bottles are all used up, I'll wash my bedding again and see how it's all panned out.