Synthetic carbamates are used as a insecticide and bird repellent.
Avery et al. (1993) evaluated a methiocarb compound (Mesurol 75% WP at 1.1 kg/ha and 1.6 kg/ha) for its effectiveness in preventing American robin (Turdus migratorius) and house finch (Carpodacus mexicanus) damage to blueberries. In Florida, USA, the compound was applied at 1.6 kg/ha, and the relative risk of blueberry loss was lower in treatment compared to control plots over an 8-day period (RR = 0.48), whereas in the Michigan sub study no difference were detected over 14 days (RR = 1.0). Similarly, Conover (1985) evaluated the effect of methiocarb in reducing blueberry losses to northern mockingbirds (Mimus polyglottos) and European starlings (Sturnus vulgaris) in Connecticut USA and found the relative risk of damage was slightly lower in treatment plots after one week (RR = 0.69) but the effect was less after two weeks (RR = 0.78). The same study also evaluated a trimethacarb solution and found that the relative risk of damage to blueberries was lower in treatment plots after one week (RR = 0.57) but the effect was less pronounced after two weeks (RR = 0.80).
Methiocarb (Mesurol 75% WP at the rate of 2.2 kg/ha) has also been used to prevent bird damage on cherries in New York state, USA (Tobin et al. 1989). A slightly lower risk of fruit damage was observed in treatment orchards (RR = 0.74), but also a 38 % lower number of birds, and without before-values no causal relationship can be determined. Finally, in Dominican Republic Mitchell and Bruggers (1985) used methiocarb (4-methylthio-3,5-xylyl N-methylcaramate 'Mesurol') to prevent damage on cacao pods from Hispaniolan woodpeckers (Melanerpes striatus) and observed a lower risk of damage in treatment pods (RR = 0.07) over a 19-day period.
