Infection is common. Mortality has been reported mainly in juveniles and in association with other diseases. Deaths may be related to asphyxiation, excessive bleeding, or brain damage when leeches move into air spaces in the skull. May also predispose to bacterial infection, predation, impede feeding etc. (J1.22.w1, J3.62.w1, J7.28.w1 J7.30.w2, J7.33.w1, B10.26.w1, B15, B36.34.w34, B37.x.w1).
1 For instance, Fixr.com gives an overview of attic insulation costs, which can amount between $400 and $1,800 for the average home. 2  In general, the whole attic insulation will cost between $1.50 and $3.50 per square foot.
1 That's $400-$1,800 for an 800 square foot space, with a typical attic insulation averaging $750-$1,100. 2  Do-it-yourself materials for roll-out batting in an open attic can run $100-$500, depending on R-values, attic size and other factors. There are a lot of variables that impact the total cost, but a rough estimate for having a contractor insulate an open attic to modern standards is $0.50-$2.25 a square foot depending on local climate and the desired R-value of the materials.