Glue traps attached to trees to tackle moths are killing bats, Mammal Society warns Government is due to consult on a ban on glue traps used to kill 'pest' wildlife because of the suffering they can cause 13 April 2021 • 4:30pm The Royal Horticultural Society has said the glue used should ideally not be strong enough to capture larger animals such as birds or mice Credit: RSPCA/SWNS/SWNS A rise in glue traps attached to trees to tackle invasive moths is killing bats, the head of the Mammal Society has said amid warnings of a "biodiversity emergency". Tree barrier glue is used to protect fruit trees from caterpillars which would eat the whole crop.