Deet in aerosols can usually be sprayed on clothing as well as skin for added protection. Permanone, containing permethrin, comes only as an aerosol and is sprayed on the clothing only. It is long-lasting and not only repels but kills. Check yourself for ticks at least twice a day. There is evidence that the longer an infected tick feeds, the greater the chance it has of transmitting a disease to you.
Early removal is good prevention.
Remove imbedded ticks with forceps or cloth or paper wrapped around the tick as near to the point of attachment as possible. Use a firm, steady pull. Do not jerk or twist, because you may break off the mouthparts and get the site infected. Do not use unprotected fingers. Apply a disinfectant to the site.