There are a couple of wormers that you can use. Valbazen liquid cattle/sheep wormer and Safeguard liquid goat wormer.
Dosage for valbazen is 1/2cc for standard size birds and 1/4cc for smaller birds. Administer orally using a syringe without a needle.
Dosage for the safeguard is 1cc for giants, 3/4cc for large fowl, 1/2cc for standards and 1/4cc for smaller birds. Administer orally using a syringe without a needle. Repeat dosing with either wormer again in 10 days. There is a 14 day withdrawal period after the second dosing with either wormer. Either wormer can be purchased online from Jefferslivestock.com or check your feed store.
The goat wormer is cheaper, comes in a 125ml bottle, the valbazen is a 500ml bottle. Both have a 2-3 year expiration date and should last you for quite awhile.
