Round worms and tape worms are a major problem for the poultry farmer; a worm burden will lower immunity, lower feed efficiency and reduce the profits to the farmer. Deworming is mostly done through water but is also done through feed. The first deworming is done at 8 weeks of age, followed by deworming at 16 to 18 weeks of age. Layer brooder chicks and grower are dewormed as per the above pattern. The above mentioned programme for deworming must be altered if on post-mortem it is observed that the birds are harbouring these worms and need to be dewormed immediately. Mostly growers suffer from round worm infestation of the intestines and sometimes with tape worms also if the rearing area is wet. Hence, as a routine, the birds may be dewormed at 16th week of age or at 18th week. Piperazine, mabendol, levamisole, thiobendazole, zodex etc, are the drugs used to remove round worms while panacur, taenil, helmonil, dicestal etc., are used against tape worms at recommended dose levels.