In partnership with TerraCycle Inc., a New Jersey recycler, the nonprofit group recently installed 15 long, gray receptacles for recycling cigarette butts. The association invested about $1,000 in the program, the first of its kind in Los Angeles. It is aimed at taking a small step toward tackling the huge problem of cigarette waste. “We’re trying to change behavior here,” said Andrew Thomas, the association’s executive director. “We have a lot of smokers in Westwood, for better or worse.”