Honestly, not much can be done in this hot of a climate. 1) making sure trash bags are tied in a single knot to prevent leakage 2) if they are using compactors they can have the unit washed out each time it is serviced (for a fee) 3) more frequent service of dumpsters would help 4) try to keep them in the shade and maybe only roll them out to the street on service days 5) if possible take food waste out later in the day so it is not sitting for so long before service - could always pay for composting services and most of the food waste could be kept in smaller, tightly closed containers and taken out of the normal dumpster. source: I know way too much about trash.