WALSALL, UNITED KINGDOM--(Marketwired - Sept. 2, 2013) - New figures from HomeServe reveal a 50 per cent rise in wasp infestations compared to 2012. Soaring summer temperatures are being attributed to the epidemic of wasp infestations, with HomeServe reporting over 1,600 call outs in the month of July alone -- up 79% from 2012.