In addition the daily food allowance of a pet rabbit can be fed on a little and often basis throughout the day. For the rabbits with good 'ball skills', there are several activity balls on the market designed for dogs which can be filled with a handful of concentrated food so that as the ball is rolled, pieces fall out. A cheaper alternative is to glue the rims of two plastic cups, already containing food together, and then punch a few holes in the side. Items that are continually targeted for chewing can be treated with an aversive substance, such as lemon juice or eucalyptus oil, but do a patch test on furnishings prior to applying excessive amounts. In most cases it is sensible to deny access to these persistent areas whilst simultaneously increasing the level of enrichment.
Several articles suggest punishment as a means of dealing with destructive behaviour.
In these cases, a form of aversion should be applied. Aversion training involves applying a startling stimulus as the inappropriate behaviour is being performed. All forms of aversion do not appear to the animal, to have originated from the owner - instead they appear to have come from the environment. Suitable methods include a squirt of water from a child's water pistol, throwing an empty coke can containing pebbles or using a manual camera flash. Once the rabbit has stopped, praise and distraction must be given to help discourage the behaviour.